{
  "schema_version": "1.0.0",
  "content_version": "1.0.0",
  "module_id": "m08",
  "title": "Rhythm Echo",
  "seed": 710041,
  "preset": {
    "id": "rhythm-echo-beginner",
    "difficulty": "beginner",
    "item_count": 10,
    "candidate_set": [
      "quarters",
      "halves",
      "rest-second"
    ],
    "pitch_range_midi": [
      60,
      79
    ],
    "tempo_bpm": 80,
    "meter": [
      4,
      4
    ],
    "hints": true
  },
  "purpose": "Repeat one bar with its rests and subdivisions.",
  "instructions": {
    "student": "Echo each new rhythm at the selected tempo. Each first response remains your independent result even if a retry succeeds.",
    "teacher": "Play each numbered question from this page. Use the same replay policy for all learners. Keep the answer section separate until the first response is recorded. For tapping tasks, record an observation on paper; use the online trainer for device-timed scoring.",
    "follow_up": "Echo two freshly generated questions after the set. Check the new rest and subdivision positions before tapping."
  },
  "examples": {
    "demonstration": {
      "id": "m08-710849-0",
      "seed": 710849,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "halves",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    "comparison": {
      "id": "m08-710849-0",
      "seed": 710849,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "halves",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "quarters",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "rest-second",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    "seed": 710849,
    "comparisonSeed": 710849
  },
  "questions": [
    {
      "id": "m08-710041-0",
      "seed": 710041,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 1,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "quarters",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 2, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-1",
      "seed": 717960,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "rest-second",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-2",
      "seed": 725879,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 1,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "quarters",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 2, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-3",
      "seed": 733798,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "halves",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-4",
      "seed": 741717,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "halves",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-5",
      "seed": 749636,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "rest-second",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-6",
      "seed": 757555,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "halves",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-7",
      "seed": 765474,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "halves",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-8",
      "seed": 773393,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "rest-second",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "id": "m08-710041-9",
      "seed": 781312,
      "kind": "tap",
      "events": [
        {
          "midi": 81,
          "onset_beats": 0,
          "duration_beats": 0.14,
          "velocity": 0.8,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 2,
          "duration_beats": 0.14,
          "velocity": 0.65,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "quarters",
          "label": "Pattern A",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 1,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "halves",
          "label": "Pattern B",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 2,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 2,
              "duration_beats": 2,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "rest-second",
          "label": "Pattern C",
          "rhythm": [
            {
              "onset_beats": 0,
              "duration_beats": 1,
              "rest": false,
              "accent": true
            },
            {
              "onset_beats": 1,
              "duration_beats": 1,
              "rest": true,
              "accent": false
            },
            {
              "onset_beats": 2,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            },
            {
              "onset_beats": 3,
              "duration_beats": 1,
              "rest": false,
              "accent": false
            }
          ],
          "events": [
            {
              "midi": 81,
              "onset_beats": 0,
              "duration_beats": 0.14,
              "velocity": 0.8,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3,
              "duration_beats": 0.14,
              "velocity": 0.65,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "halves",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    }
  ],
  "answer_key": [
    {
      "number": 1,
      "question_id": "m08-710041-0",
      "answer": "quarters",
      "label": "Tap at quarter-note positions 1, 2, 3, 4.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 2, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 2,
      "question_id": "m08-710041-1",
      "answer": "rest-second",
      "label": "Tap at quarter-note positions 1, 3, 4.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 3,
      "question_id": "m08-710041-2",
      "answer": "quarters",
      "label": "Tap at quarter-note positions 1, 2, 3, 4.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 2, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 4,
      "question_id": "m08-710041-3",
      "answer": "halves",
      "label": "Tap at quarter-note positions 1, 3.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 5,
      "question_id": "m08-710041-4",
      "answer": "halves",
      "label": "Tap at quarter-note positions 1, 3.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 6,
      "question_id": "m08-710041-5",
      "answer": "rest-second",
      "label": "Tap at quarter-note positions 1, 3, 4.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 7,
      "question_id": "m08-710041-6",
      "answer": "halves",
      "label": "Tap at quarter-note positions 1, 3.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 8,
      "question_id": "m08-710041-7",
      "answer": "halves",
      "label": "Tap at quarter-note positions 1, 3.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 9,
      "question_id": "m08-710041-8",
      "answer": "rest-second",
      "label": "Tap at quarter-note positions 1, 3, 4.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3, 4 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 1,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 1,
          "duration_beats": 1,
          "rest": true,
          "accent": false
        },
        {
          "onset_beats": 2,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        },
        {
          "onset_beats": 3,
          "duration_beats": 1,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    },
    {
      "number": 10,
      "question_id": "m08-710041-9",
      "answer": "halves",
      "label": "Tap at quarter-note positions 1, 3.",
      "explanation": "Count 4/4 at 80 BPM. Attacks occur at 1, 3 in quarter-note beat units. Rests take time without an attack.",
      "notation": {
        "clef": "treble",
        "notes": [
          "A5",
          "E5"
        ]
      },
      "rhythm": [
        {
          "onset_beats": 0,
          "duration_beats": 2,
          "rest": false,
          "accent": true
        },
        {
          "onset_beats": 2,
          "duration_beats": 2,
          "rest": false,
          "accent": false
        }
      ],
      "total_beats": 4
    }
  ],
  "record": {
    "learner": "",
    "date": "",
    "first_responses": "",
    "same_question_corrections": "",
    "new_question_check": ""
  }
}