{
  "duration_seconds": 75,
  "pitch_system": {
    "encoding": "ratio",
    "reference_hz": 110,
    "pitches": [
      1.0,
      2.083,
      3.198,
      4.333,
      5.483,
      6.645,
      7.817,
      8.998,
      10.186,
      11.382,
      12.583,
      13.789
    ],
    "octave_repeats": false
  },
  "rhythm_system": {
    "type": "indeterminate_proportional",
    "notation_note": "Strikes at D*(1 - phi^-n) for n = 1..13 within each macro-cycle; performer chooses which moments to play."
  },
  "voices": [
    {
      "name": "marker",
      "timbre": "struck_metal",
      "pitch_indices": [
        0,
        1,
        2,
        3,
        4,
        5,
        6,
        7,
        8,
        9,
        10,
        11
      ],
      "rhythm_role": "ritual_punctuation",
      "amplitude": 0.75,
      "spatial_position": [
        0.0,
        0.0
      ]
    }
  ],
  "form": {
    "arc_type": "nested_hierarchical",
    "sections": [
      {
        "name": "cycle_1_sparse",
        "start_seconds": 0,
        "duration_seconds": 15,
        "character": "opening, only lowest partials, wide gaps",
        "chord_tones": [
          0,
          1,
          2
        ]
      },
      {
        "name": "cycle_2_building",
        "start_seconds": 15,
        "duration_seconds": 20,
        "character": "upper partials entering, gaps shortening",
        "chord_tones": [
          0,
          2,
          4,
          6
        ]
      },
      {
        "name": "cycle_3_dense",
        "start_seconds": 35,
        "duration_seconds": 15,
        "character": "full stretched-partial range, micro-cycles inserted",
        "chord_tones": [
          0,
          3,
          5,
          7,
          9,
          11
        ]
      },
      {
        "name": "cycle_4_receding",
        "start_seconds": 50,
        "duration_seconds": 15,
        "character": "upper partials withdrawing, gaps lengthening",
        "chord_tones": [
          0,
          2,
          4,
          6
        ]
      },
      {
        "name": "cycle_5_closing",
        "start_seconds": 65,
        "duration_seconds": 10,
        "character": "fundamental + partial 2 only, fade into the task",
        "chord_tones": [
          0,
          1
        ]
      }
    ]
  },
  "events": [
    {
      "t": 2.8,
      "voice": "marker",
      "pitch_index": 0,
      "duration_seconds": 6.5,
      "amplitude": 0.8
    },
    {
      "t": 9.5,
      "voice": "marker",
      "pitch_index": 2,
      "duration_seconds": 4.2,
      "amplitude": 0.6
    },
    {
      "t": 15.4,
      "voice": "marker",
      "pitch_index": 1,
      "duration_seconds": 5.0,
      "amplitude": 0.7
    },
    {
      "t": 19.8,
      "voice": "marker",
      "pitch_index": 4,
      "duration_seconds": 3.5,
      "amplitude": 0.65
    },
    {
      "t": 22.9,
      "voice": "marker",
      "pitch_index": 0,
      "duration_seconds": 4.0,
      "amplitude": 0.75
    },
    {
      "t": 26.5,
      "voice": "marker",
      "pitch_index": 6,
      "duration_seconds": 2.8,
      "amplitude": 0.6
    },
    {
      "t": 28.8,
      "voice": "marker",
      "pitch_index": 2,
      "duration_seconds": 3.2,
      "amplitude": 0.7
    },
    {
      "t": 31.6,
      "voice": "marker",
      "pitch_index": 8,
      "duration_seconds": 2.4,
      "amplitude": 0.55
    },
    {
      "t": 35.3,
      "voice": "marker",
      "pitch_index": 3,
      "duration_seconds": 2.8,
      "amplitude": 0.8
    },
    {
      "t": 37.4,
      "voice": "marker",
      "pitch_index": 10,
      "duration_seconds": 1.9,
      "amplitude": 0.5
    },
    {
      "t": 38.9,
      "voice": "marker",
      "pitch_index": 5,
      "duration_seconds": 2.4,
      "amplitude": 0.7
    },
    {
      "t": 40.8,
      "voice": "marker",
      "pitch_index": 11,
      "duration_seconds": 1.8,
      "amplitude": 0.5
    },
    {
      "t": 42.2,
      "voice": "marker",
      "pitch_index": 7,
      "duration_seconds": 2.2,
      "amplitude": 0.65
    },
    {
      "t": 44.1,
      "voice": "marker",
      "pitch_index": 1,
      "duration_seconds": 3.2,
      "amplitude": 0.75
    },
    {
      "t": 46.8,
      "voice": "marker",
      "pitch_index": 9,
      "duration_seconds": 1.7,
      "amplitude": 0.55
    },
    {
      "t": 48.3,
      "voice": "marker",
      "pitch_index": 0,
      "duration_seconds": 3.8,
      "amplitude": 0.85
    },
    {
      "t": 52.9,
      "voice": "marker",
      "pitch_index": 3,
      "duration_seconds": 3.0,
      "amplitude": 0.65
    },
    {
      "t": 56.4,
      "voice": "marker",
      "pitch_index": 2,
      "duration_seconds": 3.5,
      "amplitude": 0.7
    },
    {
      "t": 61.2,
      "voice": "marker",
      "pitch_index": 1,
      "duration_seconds": 4.0,
      "amplitude": 0.6
    },
    {
      "t": 67.0,
      "voice": "marker",
      "pitch_index": 0,
      "duration_seconds": 5.5,
      "amplitude": 0.55
    }
  ]
}