music/exemplars/formula_cards/UNMATCHED__135_Route_225_Night_.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__135_Route_225_Night_",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
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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": "2026-08-07T03:03:26+00:00",
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"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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0.3799,
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0.1054,
0.0892,
0.0275
],
"peak_position_normalised": 0.5918
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.7647,
"bars": 47,
"index_per_bar": [
0.8559,
0.9474,
0.9304,
0.9584,
0.9626,
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0.6329,
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],
"definition": "lane count + 4*harmonic change rate + 0.6*onset strength + 0.4*register span, per bar, normalised to the track's own maximum (section 11.6)",
"step_map": [
{
"bar": 45,
"at_s": 79.41,
"delta": -0.3,
"at_section_boundary": false
},
{
"bar": 46,
"at_s": 81.18,
"delta": -0.608,
"at_section_boundary": false
}
],
"steps_at_section_boundaries": 0,
"steps_total": 2,
"boundary_step_share": 0.0,
"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": {
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"voiced_fraction": 0.2564,
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"mean_lanes": 7.795,
"max_lanes": 9
},
"dynamics": {
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],
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5.94,
6.69,
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28.24,
28.98,
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30.46,
31.21,
31.95,
32.69,
33.44,
34.18,
34.92,
35.67,
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40.87,
41.61,
42.35,
43.1,
43.84,
44.58,
45.33,
46.07,
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47.55,
48.3,
49.04,
49.78,
50.53,
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54.24,
54.98,
55.73,
56.47,
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58.7,
59.44,
60.19,
60.93,
61.67,
62.42,
63.16,
63.9,
64.64,
65.39,
66.13,
66.87,
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68.36,
69.1,
69.85,
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75.05,
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76.53,
77.28,
78.02,
78.76,
79.51,
80.25,
80.99,
81.73,
82.48
]
},
"register": {
"melody_span_semitones": 40.0,
"melody_tessitura_midi": 43.0,
"bass_floor_band": {
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"low_bass": 0.28178,
"bass": 0.18974,
"low_mid": 0.19084,
"mid": 0.15483,
"upper_mid": 0.07778,
"presence": 0.05519,
"brilliance": 0.03355,
"air": 0.01059,
"ultra": 0.0
},
"octave_band_profile": {
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"low_bass": 0.28178,
"bass": 0.18974,
"low_mid": 0.19084,
"mid": 0.15483,
"upper_mid": 0.07778,
"presence": 0.05519,
"brilliance": 0.03355,
"air": 0.01059,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 0.10937,
"interior_distance_median": 0.04062,
"seam_ratio": 2.693,
"seam_clean": false,
"tail_rms_over_mid": 0.0005,
"head_rms_over_mid": 0.0001,
"tail_rms_trend": -0.7447,
"head_rms_trend": 0.5907,
"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": {
"spectral_centroid_hz_mean": 2422.7,
"spectral_centroid_curve_hz": [
688.3,
1703.2,
1632.3,
3671.7,
3152.9,
2574.2,
2987.1,
2972.1,
2801.2,
2427.1,
2736.8,
2984.2,
3017.9,
2690.4,
3236.5,
3200.1,
3198.5,
2354.2,
3679.6,
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2199.3,
3213.9,
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1726.6,
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2523.8,
2664.6,
2445.6,
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2321.5,
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2813.6,
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2478.3,
2705.1,
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2211.0,
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1610.1,
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1809.8,
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1940.1,
2141.7,
3066.2,
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2219.1,
1825.0,
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1784.3,
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2117.6,
2461.0,
2508.8,
2909.9,
1595.9,
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1951.1,
2630.4,
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2127.1,
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1880.2,
1908.4,
1801.4,
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2841.8,
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],
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"spectral_flatness_mean": 0.03496,
"signature_colour": "warm"
}
}
}