music/exemplars/formula_cards/UNMATCHED__16_Jet_Set_Groove_4.json
{
"schema": "formula-card/v1",
"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__16_Jet_Set_Groove_4",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\SEGA\\Jet Set Radio Future Sega (Original Trac\\16 Jet Set Groove #4.m4a",
"sha256": "fa437d2ecb1d99bde2d79df69df6cf2d3860f81e773da054186bfbd3fda4cd9c",
"bytes": 923211,
"source_format": "mov,mp4,m4a,3gp,3g2,mj2",
"source_codec": "aac",
"source_sample_rate_hz": 44100,
"source_channels": 2,
"lossless_source": false,
"analysis_sample_rate_hz": 22050,
"decoder": "ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
"measured_at": "2026-08-07T05:37:08+00:00",
"format_induced_limit": "lossy source (aac); high-band timbre figures carry codec artefacts and the card declares it",
"control": {
"controls_passed": 24,
"controls_total": 24,
"ran_at": "2026-08-06T20:41:42+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."
},
"card": {
"duration_and_structure": {
"total_length_s": 11.096,
"section_boundaries_s": [
0.0,
0.998,
7.012,
11.096
],
"section_count": 3,
"repeat_map": [
{
"section": 0,
"most_like_section": null,
"similarity": 0.0,
"is_repeat": false
},
{
"section": 1,
"most_like_section": 0,
"similarity": 0.9782,
"is_repeat": true
},
{
"section": 2,
"most_like_section": 1,
"similarity": 0.931,
"is_repeat": true
}
],
"novelty_peak_strength": [
1.0,
0.6772
],
"method": "checkerboard-kernel novelty over a chroma+MFCC self-similarity matrix"
},
"tempo_and_time_grammar": {
"tempo_function": {
"baseline_bpm": 184.57,
"curve_times_s": [
0.0,
0.37,
0.74,
1.11,
1.49,
1.86,
2.23,
2.6,
2.97,
3.34,
3.72,
4.09,
4.46,
4.83,
5.2,
5.57,
5.94,
6.32,
6.69,
7.06,
7.43,
7.8,
8.17,
8.54,
8.92,
9.29,
9.66,
10.03,
10.4,
10.77
],
"curve_bpm": [
152.0,
152.0,
69.84,
69.84,
69.84,
69.84,
184.57,
198.77,
198.77,
198.77,
184.57,
184.57,
184.57,
184.57,
184.57,
184.57,
184.57,
184.57,
184.57,
123.05,
123.05,
123.05,
198.77,
198.77,
198.77,
198.77,
198.77,
198.77,
198.77,
198.77
],
"adjustment_events": [
{
"position_s": 0.0,
"duration_s": 2.62,
"delta_bpm": -78.14,
"shape": "ramp"
},
{
"position_s": 5.97,
"duration_s": 2.32,
"delta_bpm": -24.85,
"shape": "step"
}
],
"dispersion_bpm": 43.856,
"rubato_depth_bpm": 128.931
},
"global_bpm": 123.05,
"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.",
"windowed_tempo_stability": {
"tempo_bpm_global": 123.05,
"tempo_bpm_median_local": 123.05,
"tempo_iqr_bpm": 40.3,
"tempo_stability": 0.0,
"beat_interval_cv": 0.028
},
"dominant_onset_period_s": 0.1625,
"dominant_onset_period_bpm": 369.14,
"metre": {
"assumed": "4/4",
"measured": null,
"note": "Bar arithmetic on this card uses 4 beats per bar at the baseline tempo. The onset period beside it is MEASURED; the signature is not."
},
"groove": {
"swing_ratio": 0.645,
"onset_rate_per_s": 10.812
}
},
"tonality": {
"key": "F",
"mode": "major",
"windowed_key_agreement": 0.6667,
"modulation_note": "Windowed key agreement below ~0.7 is the modulation signal at rung 1; a pivot-chord map needs symbolic transcription (rung 2)."
},
"the_hook": {
"available": true,
"onset_s": 1.057,
"onset_bars": 0.81,
"pitch_contour": "--U-",
"interval_vocabulary_semitones": [
0,
12
],
"intervals": [
0.0,
0.33,
11.67,
0.0
],
"range_semitones": 12.0,
"distinctive_deviation": {
"largest_interval_semitones": 11.67,
"at_note_index": 3,
"is_licensed_leap": true
}
},
"motif_economy": {
"self_similarity_peak": 0.9409,
"self_similarity_baseline": 0.9098,
"self_similarity_lift": 0.0311,
"recurrence_lag_s": 0.464,
"interval_3gram_repetition": 0.0,
"interval_4gram_repetition": 0.0
},
"lane_analysis": {
"method": "spectral_band_proxy",
"confidence": "LOW-FOR-ROSTER, USABLE-FOR-ARRANGEMENT",
"method_note": "Section 11.1 requires the lane method be declared. Bands are not instruments: two instruments in one octave read as one lane, and one instrument spanning two octaves reads as two. Entry/exit and simultaneity shapes are trustworthy; a roster is not claimed.",
"lane_roster_bands": [
"sub",
"low_bass",
"bass",
"low_mid",
"mid",
"upper_mid",
"presence",
"brilliance",
"air",
"ultra"
],
"entry_exit_map": [
{
"lane": "low_bass",
"band_hz": [
45,
90
],
"entry_s": 0.07,
"exit_s": 8.359,
"active_fraction": 0.7218,
"segments": [
[
0.07,
7.012
],
[
7.338,
8.359
]
]
},
{
"lane": "bass",
"band_hz": [
90,
180
],
"entry_s": 0.093,
"exit_s": 10.89,
"active_fraction": 0.9749,
"segments": [
[
0.093,
10.89
]
]
},
{
"lane": "low_mid",
"band_hz": [
180,
355
],
"entry_s": 0.07,
"exit_s": 10.913,
"active_fraction": 0.9791,
"segments": [
[
0.07,
10.913
]
]
},
{
"lane": "mid",
"band_hz": [
355,
710
],
"entry_s": 0.07,
"exit_s": 10.913,
"active_fraction": 0.9791,
"segments": [
[
0.07,
10.913
]
]
},
{
"lane": "upper_mid",
"band_hz": [
710,
1400
],
"entry_s": 0.07,
"exit_s": 10.913,
"active_fraction": 0.9791,
"segments": [
[
0.07,
10.913
]
]
},
{
"lane": "presence",
"band_hz": [
1400,
2800
],
"entry_s": 0.07,
"exit_s": 10.89,
"active_fraction": 0.977,
"segments": [
[
0.07,
10.89
]
]
},
{
"lane": "brilliance",
"band_hz": [
2800,
5600
],
"entry_s": 0.093,
"exit_s": 10.913,
"active_fraction": 0.977,
"segments": [
[
0.093,
10.913
]
]
},
{
"lane": "air",
"band_hz": [
5600,
11200
],
"entry_s": 0.139,
"exit_s": 10.89,
"active_fraction": 0.9707,
"segments": [
[
0.139,
10.89
]
]
}
],
"interlap_matrix": {
"sub|low_bass": 0.1826,
"sub|bass": 0.1328,
"sub|low_mid": 0.1346,
"sub|mid": 0.1346,
"sub|upper_mid": 0.1346,
"sub|presence": 0.1349,
"sub|brilliance": 0.1325,
"sub|air": 0.1285,
"low_bass|bass": 0.7366,
"low_bass|low_mid": 0.7372,
"low_bass|mid": 0.7372,
"low_bass|upper_mid": 0.7372,
"low_bass|presence": 0.7388,
"low_bass|brilliance": 0.735,
"low_bass|air": 0.7323,
"bass|low_mid": 0.9957,
"bass|mid": 0.9957,
"bass|upper_mid": 0.9957,
"bass|presence": 0.9979,
"bass|brilliance": 0.9979,
"bass|air": 0.9957,
"low_mid|mid": 1.0,
"low_mid|upper_mid": 1.0,
"low_mid|presence": 0.9979,
"low_mid|brilliance": 0.9979,
"low_mid|air": 0.9915,
"mid|upper_mid": 1.0,
"mid|presence": 0.9979,
"mid|brilliance": 0.9979,
"mid|air": 0.9915,
"upper_mid|presence": 0.9979,
"upper_mid|brilliance": 0.9979,
"upper_mid|air": 0.9915,
"presence|brilliance": 0.9957,
"presence|air": 0.9936,
"brilliance|air": 0.9936
},
"simultaneity_curve": {
"times_s": [
0.0,
0.186,
0.372,
0.557,
0.743,
0.929,
1.115,
1.3,
1.486,
1.672,
1.858,
2.043,
2.229,
2.415,
2.601,
2.786,
2.972,
3.158,
3.344,
3.529,
3.715,
3.901,
4.087,
4.272,
4.458,
4.644,
4.83,
5.016,
5.201,
5.387,
5.573,
5.759,
5.944,
6.13,
6.316,
6.502,
6.687,
6.873,
7.059,
7.245,
7.43,
7.616,
7.802,
7.988,
8.173,
8.359,
8.545,
8.731,
8.916,
9.102,
9.288,
9.474,
9.66,
9.845,
10.031,
10.217,
10.403,
10.588,
10.774,
10.96
],
"lanes": [
0,
9,
9,
9,
8,
8,
8,
9,
8,
8,
9,
8,
8,
8,
8,
8,
8,
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9,
8,
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8,
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8,
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7,
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7,
7,
7,
7,
7,
7,
7,
7,
7,
7,
7,
7,
0
],
"max": 9,
"mean": 7.69
},
"register_spacing_octaves": [
1.085,
1.0,
0.99,
0.99,
0.99,
0.99,
1.0,
1.0
]
},
"event_grammar": {
"drops": [
{
"position": 0.9333,
"at_s": 10.356,
"db_delta": -8.53,
"lanes_removed": 0.65,
"bars_held_s": 0.139,
"re_enters_at_s": 10.495
}
],
"raises": [
{
"position": 0.0544,
"start_s": 0.604,
"end_s": 6.339,
"db_delta": 7.31,
"lanes_added": 0.73,
"slope_db_per_s": 1.274
}
],
"breaks": [],
"tuttis": [],
"silence_budget": {
"fraction": 0.0167,
"seconds": 0.186,
"threshold": "40 dB below the track's own p95 RMS",
"note": "Section 11.2 treats rest as a FIRST-CLASS parameter, not an absence."
},
"counts": {
"drops": 1,
"raises": 1,
"breaks": 0,
"tuttis": 0
}
},
"opening_and_flow_law": {
"onset_type": "fade_in",
"first_sound_at_s": 0.046,
"time_to_hook_s": null,
"time_to_hook_bars": null,
"time_to_full_texture_s": 0.139,
"time_to_full_texture_bars": 0.11,
"flow_curve": {
"definition": "energy = 0.45*density + 0.35*lane-simultaneity + 0.20*register, each normalised to the track's own maximum (section 11.4)",
"times_s": [
0.0,
0.74,
1.49,
2.23,
2.97,
3.72,
4.46,
5.2,
5.94,
6.69,
7.43,
8.17,
8.92,
9.66,
10.4
],
"values": [
0.1284,
0.6273,
0.7178,
0.7087,
0.7097,
0.6887,
0.6946,
0.711,
0.6992,
0.6859,
0.6664,
0.733,
0.5997,
0.5791,
0.5077
],
"peak_position_normalised": 0.369
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.3003,
"bars": 8,
"index_per_bar": [
1.0,
0.9666,
0.9612,
0.983,
0.9267,
0.9108,
0.8794,
0.8075
],
"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": [],
"steps_at_section_boundaries": 0,
"steps_total": 0,
"boundary_step_share": null,
"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": 0.451,
"melodic_salience": 0.3844,
"voiced_fraction": 0.069,
"note_count": 5,
"mean_lanes": 7.69,
"max_lanes": 9
},
"dynamics": {
"dynamic_range_db_p95_minus_p10": 4.72,
"peak_position_normalised": 0.3459,
"peak_at_s": 3.831,
"arc_curve_db": [
-9.19,
-12.88,
-7.74,
-7.98,
-7.67,
-7.38,
-7.76,
-8.12,
-8.28,
-8.87,
-8.73,
-9.02,
-10.32,
-10.9,
-24.86
],
"arc_times_s": [
0.0,
0.74,
1.49,
2.23,
2.97,
3.72,
4.46,
5.2,
5.94,
6.69,
7.43,
8.17,
8.92,
9.66,
10.4
]
},
"register": {
"melody_span_semitones": 12.0,
"melody_tessitura_midi": 41.33,
"bass_floor_band": {
"sub": 0.00424,
"low_bass": 0.07907,
"bass": 0.31152,
"low_mid": 0.18401,
"mid": 0.12524,
"upper_mid": 0.11212,
"presence": 0.07823,
"brilliance": 0.0872,
"air": 0.01498,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 0.00424,
"low_bass": 0.07907,
"bass": 0.31152,
"low_mid": 0.18401,
"mid": 0.12524,
"upper_mid": 0.11212,
"presence": 0.07823,
"brilliance": 0.0872,
"air": 0.01498,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 0.13715,
"interior_distance_median": 0.02636,
"seam_ratio": 5.203,
"seam_clean": false,
"tail_rms_over_mid": 0.4629,
"head_rms_over_mid": 0.781,
"tail_rms_trend": -0.5828,
"head_rms_trend": 0.6699,
"baked_fade_out": true,
"baked_fade_in": false
},
"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": 2310.9,
"spectral_centroid_curve_hz": [
0.0,
1566.4,
2350.4,
2154.9,
2070.5,
1495.2,
1891.2,
2572.4,
2497.4,
2268.2,
2115.9,
3796.9,
2259.3,
2174.4,
1798.3
],
"spectral_rolloff85_hz_mean": 4694.3,
"spectral_flatness_mean": 0.04612,
"signature_colour": "warm"
}
}
}