music/exemplars/formula_cards/UNMATCHED__1-25_Metamorphosis.json
{
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"consumer": "docs/proposals/music/MASTERPIECE_PROGRAM.md rung 2 (the archetype synthesis -> MASTERPIECE_STANDARD.md)",
"tier": "RUNG-1 MEASURED",
"legal_posture": "ANALYSIS FOR UNDERSTANDING ONLY. Audio lawfully obtained by Josh, read from disk, measured, and never copied, redistributed, or used as model input of any kind.",
"track_id": "UNMATCHED__1-25_Metamorphosis",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\Nobuo Uematsu\\FINAL FANTASY VI (Original Soundtrack)\\1-25 Metamorphosis.m4a",
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"decoder": "ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
"measured_at": "2026-08-07T12:25:55+00:00",
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"ran_at": "2026-08-07T12:07:20+00:00",
"ffmpeg_version": "ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
"note": "This measurement is admissible only because the positive control recovered its planted answers in the same process, immediately before it."
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"octave_ambiguity_note": "Beat trackers pick a metrical level, and half/double-time readings are a real and known property, not an error -- the rig's own control plants 120 bpm and this estimator returns 60. Every bar figure on this card (time-to-hook in bars, the complexity index's bar length) inherits whichever level was picked, so compare bar counts within a card, never across cards, until rung 2 pins the metrical level per class.",
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],
"peak_position_normalised": 0.1292
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.4861,
"bars": 57,
"index_per_bar": [
0.6006,
0.9477,
0.9352,
0.9511,
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0.9748,
0.9656,
0.9176,
0.9718,
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0.8397,
0.2326,
0.0427
],
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{
"bar": 1,
"at_s": 1.49,
"delta": 0.347,
"at_section_boundary": true
},
{
"bar": 14,
"at_s": 20.8,
"delta": -0.427,
"at_section_boundary": true
},
{
"bar": 15,
"at_s": 22.29,
"delta": 0.428,
"at_section_boundary": false
},
{
"bar": 38,
"at_s": 56.47,
"delta": -0.392,
"at_section_boundary": true
},
{
"bar": 39,
"at_s": 57.96,
"delta": 0.298,
"at_section_boundary": true
},
{
"bar": 55,
"at_s": 81.73,
"delta": -0.607,
"at_section_boundary": false
},
{
"bar": 56,
"at_s": 83.22,
"delta": -0.19,
"at_section_boundary": false
}
],
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"steps_total": 7,
"boundary_step_share": 0.571,
"hypothesis_note": "Section 11.6 expects masterpieces to step complexity AT structural boundaries and hold it flat inside sections. This share is the measurement of that claim on this track; the corpus decides, not us."
},
"texture_and_density": {
"note_rate_per_s": 1.61,
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"voiced_fraction": 0.3514,
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"max_lanes": 9
},
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1.49,
2.23,
2.97,
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4.46,
5.2,
5.94,
6.69,
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8.17,
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16.35,
17.09,
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26.01,
26.75,
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28.98,
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31.21,
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35.67,
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37.15,
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38.64,
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40.87,
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42.35,
43.1,
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44.58,
45.33,
46.07,
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47.55,
48.3,
49.04,
49.78,
50.53,
51.27,
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52.76,
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54.24,
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57.96,
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59.44,
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64.64,
65.39,
66.13,
66.87,
67.62,
68.36,
69.1,
69.85,
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74.3,
75.05,
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79.51,
80.25,
80.99,
81.73,
82.48,
83.22,
83.96,
84.71,
85.45
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},
"register": {
"melody_span_semitones": 39.0,
"melody_tessitura_midi": 47.0,
"bass_floor_band": {
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"low_bass": 0.12539,
"bass": 0.2475,
"low_mid": 0.20363,
"mid": 0.17337,
"upper_mid": 0.11392,
"presence": 0.08625,
"brilliance": 0.04099,
"air": 0.00699,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 0.00187,
"low_bass": 0.12539,
"bass": 0.2475,
"low_mid": 0.20363,
"mid": 0.17337,
"upper_mid": 0.11392,
"presence": 0.08625,
"brilliance": 0.04099,
"air": 0.00699,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 1.0,
"interior_distance_median": 0.03456,
"seam_ratio": 28.939,
"seam_clean": false,
"tail_rms_over_mid": 0.0,
"head_rms_over_mid": 0.0,
"tail_rms_trend": -0.9045,
"head_rms_trend": 0.9005,
"baked_fade_out": true,
"baked_fade_in": true
},
"ending": "baked_fade_out",
"cadence_census_note": "A cadence census needs harmonic transcription and is a rung-2 dimension; the seam measurement is what rung 1 can honestly report about how it ends."
},
"timbre": {
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"spectral_centroid_curve_hz": [
0.0,
2119.5,
2612.7,
1802.9,
1788.1,
1779.0,
2500.7,
2022.1,
1523.3,
2228.9,
2365.4,
2129.3,
1483.1,
2232.9,
1950.5,
2506.1,
1168.6,
2243.2,
2234.0,
2424.3,
2552.4,
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2691.1,
2471.0,
2597.8,
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1383.6,
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2248.3,
2549.6,
2140.6,
2369.2,
2259.5,
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1801.3,
1710.2,
1488.2,
2490.6,
2712.8,
1471.4,
1392.3,
1268.0,
2651.7,
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1654.3,
1319.9,
2598.3,
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1496.4,
2577.1,
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2739.0,
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2766.3,
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2600.6,
1582.2,
2460.6,
1661.0,
2618.3,
2174.2,
2384.1,
2121.3,
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"spectral_flatness_mean": 0.02418,
"signature_colour": "warm"
}
}
}