{
  "schema_version": "1.0.0",
  "content_version": "1.0.0",
  "module_id": "m31",
  "title": "Inversions in Context",
  "seed": 710041,
  "preset": {
    "id": "inversion-context-beginner",
    "difficulty": "beginner",
    "item_count": 10,
    "candidate_set": [
      "root",
      "first"
    ],
    "pitch_range_midi": [
      60,
      79
    ],
    "tempo_bpm": 90,
    "meter": [
      4,
      4
    ],
    "hints": true
  },
  "purpose": "Identify a chord inversion after hearing its root position.",
  "instructions": {
    "student": "Identify the target inversion in each new context. Separate the reference chord from the chord that receives your answer.",
    "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": "Work from a freshly generated root and target voicing. Do not use the bass register of the previous chord as a shortcut."
  },
  "examples": {
    "demonstration": {
      "id": "m31-713172-0",
      "seed": 713172,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 62,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 74,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 62,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "first",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    "comparison": {
      "id": "m31-713172-0",
      "seed": 713172,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 62,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 62,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 62,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "root",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has D4 in the bass: root position. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "D4",
          "F#4",
          "A4"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    "seed": 713172,
    "comparisonSeed": 713172
  },
  "questions": [
    {
      "id": "m31-710041-0",
      "seed": 710041,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 60,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 60,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 60,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "root",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has C4 in the bass: root position. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "C4",
          "E4",
          "G4"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-1",
      "seed": 717960,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 60,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 72,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 60,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "first",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has E4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "E4",
          "G4",
          "C5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-2",
      "seed": 725879,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 60,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 60,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 60,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "root",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has C4 in the bass: root position. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "C4",
          "E4",
          "G4"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-3",
      "seed": 733798,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 62,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 74,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 62,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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      ],
      "answer": "first",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-4",
      "seed": 741717,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 62,
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          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
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          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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            {
              "midi": 62,
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              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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              "midi": 62,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
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            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
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              "voice_id": "triangle"
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            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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              "midi": 74,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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      ],
      "answer": "first",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-5",
      "seed": 749636,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 60,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
          "midi": 67,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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      "choices": [
        {
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          "label": "Root position",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 60,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
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              "midi": 72,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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      ],
      "answer": "first",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has E4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "E4",
          "G4",
          "C5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-6",
      "seed": 757555,
      "kind": "inversion_context",
      "events": [
        {
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          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
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          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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      "choices": [
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              "midi": 61,
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              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 65,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 68,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 61,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 65,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 68,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 61,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 65,
              "onset_beats": 0,
              "duration_beats": 1.5,
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              "voice_id": "triangle"
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            {
              "midi": 68,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 65,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 73,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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      ],
      "answer": "first",
      "explanation": "The first chord establishes C#4 as the root of a major triad. The second chord has F4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C#4",
          "F4",
          "G#4",
          "F4",
          "G#4",
          "C#5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-7",
      "seed": 765474,
      "kind": "inversion_context",
      "events": [
        {
          "midi": 63,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
          "midi": 67,
          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
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          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 70,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
          "midi": 75,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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      ],
      "choices": [
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          "events": [
            {
              "midi": 63,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 63,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 70,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 63,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 70,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 67,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 75,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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      ],
      "answer": "first",
      "explanation": "The first chord establishes D#4 as the root of a major triad. The second chord has G4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D#4",
          "G4",
          "A#4",
          "G4",
          "A#4",
          "D#5"
        ]
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      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
      "id": "m31-710041-8",
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      "kind": "inversion_context",
      "events": [
        {
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          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
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          "onset_beats": 0,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
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          "velocity": 0.7,
          "voice_id": "triangle"
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        {
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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        {
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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      ],
      "choices": [
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          "events": [
            {
              "midi": 61,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 65,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
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              "duration_beats": 1.5,
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            {
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              "voice_id": "triangle"
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              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 61,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
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              "onset_beats": 0,
              "duration_beats": 1.5,
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            {
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              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 65,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
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          ]
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      ],
      "answer": "first",
      "explanation": "The first chord establishes C#4 as the root of a major triad. The second chord has F4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C#4",
          "F4",
          "G#4",
          "F4",
          "G#4",
          "C#5"
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      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    },
    {
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      "kind": "inversion_context",
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        {
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          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
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          "onset_beats": 0,
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        {
          "midi": 66,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 74,
          "onset_beats": 3,
          "duration_beats": 1.5,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "root",
          "label": "Root position",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 62,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "first",
          "label": "First inversion",
          "events": [
            {
              "midi": 62,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 3,
              "duration_beats": 1.5,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "first",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8,
      "instructions": "The first chord is in root position. Which inversion of the same major chord comes second?"
    }
  ],
  "answer_key": [
    {
      "number": 1,
      "question_id": "m31-710041-0",
      "answer": "root",
      "label": "Root position",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has C4 in the bass: root position. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "C4",
          "E4",
          "G4"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 2,
      "question_id": "m31-710041-1",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has E4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "E4",
          "G4",
          "C5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 3,
      "question_id": "m31-710041-2",
      "answer": "root",
      "label": "Root position",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has C4 in the bass: root position. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "C4",
          "E4",
          "G4"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 4,
      "question_id": "m31-710041-3",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 5,
      "question_id": "m31-710041-4",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 6,
      "question_id": "m31-710041-5",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes C4 as the root of a major triad. The second chord has E4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "E4",
          "G4",
          "E4",
          "G4",
          "C5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 7,
      "question_id": "m31-710041-6",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes C#4 as the root of a major triad. The second chord has F4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C#4",
          "F4",
          "G#4",
          "F4",
          "G#4",
          "C#5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 8,
      "question_id": "m31-710041-7",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes D#4 as the root of a major triad. The second chord has G4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D#4",
          "G4",
          "A#4",
          "G4",
          "A#4",
          "D#5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 9,
      "question_id": "m31-710041-8",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes C#4 as the root of a major triad. The second chord has F4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C#4",
          "F4",
          "G#4",
          "F4",
          "G#4",
          "C#5"
        ]
      },
      "total_beats": 8
    },
    {
      "number": 10,
      "question_id": "m31-710041-9",
      "answer": "first",
      "label": "First inversion",
      "explanation": "The first chord establishes D4 as the root of a major triad. The second chord has F#4 in the bass: first inversion. Its pitch classes stay the same.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D4",
          "F#4",
          "A4",
          "F#4",
          "A4",
          "D5"
        ]
      },
      "total_beats": 8
    }
  ],
  "record": {
    "learner": "",
    "date": "",
    "first_responses": "",
    "same_question_corrections": "",
    "new_question_check": ""
  }
}