{
  "schema_version": "1.0.0",
  "content_version": "1.0.0",
  "module_id": "m21",
  "title": "Scale Color",
  "seed": 710041,
  "preset": {
    "id": "scale-color-beginner",
    "difficulty": "beginner",
    "item_count": 10,
    "candidate_set": [
      "major",
      "natural-minor"
    ],
    "pitch_range_midi": [
      60,
      79
    ],
    "tempo_bpm": 90,
    "meter": [
      4,
      4
    ],
    "hints": true
  },
  "purpose": "Hear major and natural minor scale patterns.",
  "instructions": {
    "student": "Identify the pattern across different tonics. In the descending preset, follow the whole sequence back toward the tonic.",
    "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": "Classify new scales from their interval pattern; a familiar starting pitch is not the answer."
  },
  "examples": {
    "demonstration": {
      "id": "m21-712162-0",
      "seed": 712162,
      "kind": "scale",
      "events": [
        {
          "midi": 64,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 71,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 72,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 74,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "natural-minor",
      "explanation": "Natural minor scale on E4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "E4",
          "F#4",
          "G4",
          "A4",
          "B4",
          "C5",
          "D5",
          "E5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    "comparison": {
      "id": "m21-712162-0",
      "seed": 712162,
      "kind": "scale",
      "events": [
        {
          "midi": 64,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 68,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 71,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 73,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 75,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 76,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 64,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "major",
      "explanation": "Major scale on E4: 0, 2, 4, 5, 7, 9, 11, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "E4",
          "F#4",
          "G#4",
          "A4",
          "B4",
          "C#5",
          "D#5",
          "E5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    "seed": 712162,
    "comparisonSeed": 712162
  },
  "questions": [
    {
      "id": "m21-710041-0",
      "seed": 710041,
      "kind": "scale",
      "events": [
        {
          "midi": 61,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 63,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 65,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 68,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 70,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 72,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 73,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 61,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 63,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 65,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 61,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 63,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "major",
      "explanation": "Major scale on C#4: 0, 2, 4, 5, 7, 9, 11, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C#4",
          "D#4",
          "F4",
          "F#4",
          "G#4",
          "A#4",
          "C5",
          "C#5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "id": "m21-710041-1",
      "seed": 717960,
      "kind": "scale",
      "events": [
        {
          "midi": 60,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 62,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 63,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 65,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 68,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 70,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 72,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 62,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 64,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 65,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 60,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 62,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 63,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 65,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "natural-minor",
      "explanation": "Natural minor scale on C4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "D4",
          "D#4",
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "id": "m21-710041-2",
      "seed": 725879,
      "kind": "scale",
      "events": [
        {
          "midi": 60,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 62,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 64,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 65,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
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          "label": "Major scale",
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            {
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            {
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        {
          "id": "natural-minor",
          "label": "Natural minor",
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          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
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      "explanation": "Natural minor scale on F4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
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          "C5",
          "C#5",
          "D#5",
          "F5"
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        },
        {
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          "label": "Natural minor",
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      ],
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      "explanation": "Natural minor scale on E4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
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          "F#4",
          "G4",
          "A4",
          "B4",
          "C5",
          "D5",
          "E5"
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          "label": "Natural minor",
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      "explanation": "Natural minor scale on C4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
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        "clef": "treble",
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          "D4",
          "D#4",
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5"
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        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 63,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
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            {
              "midi": 65,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "natural-minor",
      "explanation": "Natural minor scale on D#4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D#4",
          "F4",
          "F#4",
          "G#4",
          "A#4",
          "B4",
          "C#5",
          "D#5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "id": "m21-710041-7",
      "seed": 765474,
      "kind": "scale",
      "events": [
        {
          "midi": 67,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 69,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 70,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 72,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 74,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 75,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 77,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 79,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 78,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 79,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 67,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 77,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 79,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "natural-minor",
      "explanation": "Natural minor scale on G4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "G4",
          "A4",
          "A#4",
          "C5",
          "D5",
          "D#5",
          "F5",
          "G5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "id": "m21-710041-8",
      "seed": 773393,
      "kind": "scale",
      "events": [
        {
          "midi": 63,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 65,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 66,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 68,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 70,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 71,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 73,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 75,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 63,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 65,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 63,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 65,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 66,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 71,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "natural-minor",
      "explanation": "Natural minor scale on D#4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D#4",
          "F4",
          "F#4",
          "G#4",
          "A#4",
          "B4",
          "C#5",
          "D#5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "id": "m21-710041-9",
      "seed": 781312,
      "kind": "scale",
      "events": [
        {
          "midi": 65,
          "onset_beats": 0,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 67,
          "onset_beats": 0.55,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 68,
          "onset_beats": 1.1,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 70,
          "onset_beats": 1.6500000000000001,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 72,
          "onset_beats": 2.2,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 73,
          "onset_beats": 2.75,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 75,
          "onset_beats": 3.3000000000000003,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        },
        {
          "midi": 77,
          "onset_beats": 3.8500000000000005,
          "duration_beats": 0.45,
          "velocity": 0.7,
          "voice_id": "triangle"
        }
      ],
      "choices": [
        {
          "id": "major",
          "label": "Major scale",
          "events": [
            {
              "midi": 65,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 69,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 74,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 76,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 77,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        },
        {
          "id": "natural-minor",
          "label": "Natural minor",
          "events": [
            {
              "midi": 65,
              "onset_beats": 0,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 67,
              "onset_beats": 0.55,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 68,
              "onset_beats": 1.1,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 70,
              "onset_beats": 1.6500000000000001,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 72,
              "onset_beats": 2.2,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 73,
              "onset_beats": 2.75,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 75,
              "onset_beats": 3.3000000000000003,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            },
            {
              "midi": 77,
              "onset_beats": 3.8500000000000005,
              "duration_beats": 0.45,
              "velocity": 0.7,
              "voice_id": "triangle"
            }
          ]
        }
      ],
      "answer": "natural-minor",
      "explanation": "Natural minor scale on F4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5",
          "C#5",
          "D#5",
          "F5"
        ]
      },
      "total_beats": 4.300000000000001
    }
  ],
  "answer_key": [
    {
      "number": 1,
      "question_id": "m21-710041-0",
      "answer": "major",
      "label": "Major scale",
      "explanation": "Major scale on C#4: 0, 2, 4, 5, 7, 9, 11, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C#4",
          "D#4",
          "F4",
          "F#4",
          "G#4",
          "A#4",
          "C5",
          "C#5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 2,
      "question_id": "m21-710041-1",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on C4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "D4",
          "D#4",
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 3,
      "question_id": "m21-710041-2",
      "answer": "major",
      "label": "Major scale",
      "explanation": "Major scale on C4: 0, 2, 4, 5, 7, 9, 11, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "D4",
          "E4",
          "F4",
          "G4",
          "A4",
          "B4",
          "C5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 4,
      "question_id": "m21-710041-3",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on F4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5",
          "C#5",
          "D#5",
          "F5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 5,
      "question_id": "m21-710041-4",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on E4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "E4",
          "F#4",
          "G4",
          "A4",
          "B4",
          "C5",
          "D5",
          "E5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 6,
      "question_id": "m21-710041-5",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on C4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "C4",
          "D4",
          "D#4",
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 7,
      "question_id": "m21-710041-6",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on D#4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D#4",
          "F4",
          "F#4",
          "G#4",
          "A#4",
          "B4",
          "C#5",
          "D#5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 8,
      "question_id": "m21-710041-7",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on G4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "G4",
          "A4",
          "A#4",
          "C5",
          "D5",
          "D#5",
          "F5",
          "G5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 9,
      "question_id": "m21-710041-8",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on D#4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "D#4",
          "F4",
          "F#4",
          "G#4",
          "A#4",
          "B4",
          "C#5",
          "D#5"
        ]
      },
      "total_beats": 4.300000000000001
    },
    {
      "number": 10,
      "question_id": "m21-710041-9",
      "answer": "natural-minor",
      "label": "Natural minor",
      "explanation": "Natural minor scale on F4: 0, 2, 3, 5, 7, 8, 10, 12 semitones above the tonic.",
      "notation": {
        "clef": "treble",
        "notes": [
          "F4",
          "G4",
          "G#4",
          "A#4",
          "C5",
          "C#5",
          "D#5",
          "F5"
        ]
      },
      "total_beats": 4.300000000000001
    }
  ],
  "record": {
    "learner": "",
    "date": "",
    "first_responses": "",
    "same_question_corrections": "",
    "new_question_check": ""
  }
}