feat: pattern-based generators from real track analysis, RPP structure fixes, randomization
- Reverse-engineer drum patterns from 2 real reggaeton tracks with librosa - Create patterns.py with extracted frequency data (kick/snare/hihat positions) - Rewrite rhythm.py with pattern-bank generators (dembow, dense, trapico, offbeat) - Rewrite melodic.py with section-aware generators and humanization - Add weighted random sample selection in SampleSelector (top-5 pool) - Add generate_structure() with randomized templates and energy variance - Fix RPP structure: TEMPO arity (3→4 args), string quoting for empty strings - Rewrite quick_drumloop_test.py with correct REAPER ground truth format - Add scripts/analyze_examples.py for reverse engineering audio tracks - Add --seed argument for reproducible generation - 72 tests passing
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renato97
@@ -2,64 +2,90 @@
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"genre": "reggaeton",
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"era": "2009",
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"display_name": "Reggaeton 2009 (Era de Oro)",
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"description": "Reggaeton comercial 2006-2010. Daddy Yankee, Wisin y Yandel, Don Omar, Tito El Bambino, Hector El Father. Beat dembow con 808, piano stabs, brass hits.",
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"description": "Reggaeton comercial 2006-2010. Daddy Yankee, Wisin y Yandel, Don Omar, Tito El Bambino, Hector El Father. Beat dembow con 808, piano stabs, brass hits. AGGRESSIVE groove, dense drum loops, GAP/BREAK section technique.",
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"bpm": {
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"min": 88,
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"max": 102,
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"default": 96
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"default": 99
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},
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"keys": ["Am", "Dm", "Gm", "Cm", "Em", "Fm", "Bbm"],
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"time_signature": [4, 4],
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"ppq": 96,
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"structure": {
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"template": "intro-verse-chorus-verse-chorus-outro",
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"sections": [
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{"name": "intro", "bars": 4, "energy": 0.3},
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{"name": "verse", "bars": 8, "energy": 0.6},
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{"name": "chorus", "bars": 8, "energy": 0.9},
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{"name": "verse2", "bars": 8, "energy": 0.6},
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{"name": "chorus2", "bars": 8, "energy": 1.0},
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{"name": "bridge", "bars": 4, "energy": 0.5},
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{"name": "chorus3", "bars": 8, "energy": 1.0},
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{"name": "outro", "bars": 4, "energy": 0.4}
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]
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"template": "extracted_real_tracks",
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"templates": {
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"extracted_real_tracks": [
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{"name": "build", "bars": 16, "energy": 0.6},
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{"name": "verse", "bars": 2, "energy": 0.35},
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{"name": "build", "bars": 47, "energy": 0.65},
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{"name": "verse", "bars": 1, "energy": 0.35},
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{"name": "gap", "bars": 1, "energy": 0.05},
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{"name": "drop", "bars": 2, "energy": 1.0},
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{"name": "build", "bars": 5, "energy": 0.7},
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{"name": "break", "bars": 2, "energy": 0.05},
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{"name": "drop", "bars": 1, "energy": 0.95},
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{"name": "build", "bars": 12, "energy": 0.65},
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{"name": "verse", "bars": 2, "energy": 0.35},
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{"name": "build", "bars": 8, "energy": 0.6}
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],
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"standard": [
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{"name": "intro", "bars": 4, "energy": 0.3},
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{"name": "verse", "bars": 8, "energy": 0.35},
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{"name": "chorus", "bars": 8, "energy": 0.95},
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{"name": "verse", "bars": 8, "energy": 0.35},
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{"name": "chorus", "bars": 8, "energy": 0.95},
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{"name": "bridge", "bars": 8, "energy": 0.4},
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{"name": "chorus", "bars": 8, "energy": 0.95},
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{"name": "outro", "bars": 8, "energy": 0.35}
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]
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},
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"gap_break_energy_contrast": 50.0,
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"dembow_positions": [0, 4, 8, 11, 12],
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"note": "GAP/BREAK technique: 1-2 bars near-silence (-50dB) followed by loud DROP (+6dB) creates massive contrast. Real tracks use this extensively."
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},
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"pattern_banks": {
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"dembow_classico": "extracted from 99.4 BPM track (Ejemplo 1)",
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"perreo": "aggressive variant with extra kicks at beat 1.5& and 2",
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"trapico": "half-time feel, kicks at beats 1 and 3 only",
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"dense": "full drum loop density, highest hit frequency positions"
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},
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"roles": {
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"drums": {
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"description": "Patron dembow - kick en 1 y 2.5, snare en 2 y 4, hi-hats en corcheas",
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"pattern_type": "dembow",
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"description": "DENSE drum loop (NOT sparse kick-snare). Kicks at positions 4, 11, 8, 12, 9 — the dembow IS there but buried in a full loop. Pattern bank: kick_pattern_bank_notes",
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"pattern_type": "drum_loop",
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"preferred_plugins": ["FPC", "Fruity DrumSynth Live", "DirectWave", "Kontakt 7"],
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"midi_channel": 0,
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"mixer_slot": 0,
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"notes_template": "dembow"
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"notes_template": "drum_loop_dembow",
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"bank": "dembow_classico"
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},
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"bass": {
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"description": "808 sub bass que sigue al kick. Sostenido, octave 2.",
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"description": "808 sub bass. Section-aware: follows section energy. Tresillo grouping in drop/chorus, sparse in break/gap.",
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"pattern_type": "808_follow_kick",
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"preferred_plugins": ["Serum 2", "Transistor Bass", "Sytrus", "3x Osc", "ravity(S)"],
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"midi_channel": 1,
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"mixer_slot": 1,
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"octave": 2,
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"notes_template": "bass_808"
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"notes_template": "bass_tresillo_section_aware"
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},
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"harmony": {
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"description": "Piano stabs en offbeats. Closed triads.",
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"description": "Piano stabs in offbeats. Closed triads. Section-aware velocity.",
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"pattern_type": "piano_stabs",
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"preferred_plugins": ["FL Keys", "Nexus2", "Kontakt 7", "Sakura", "Pigments"],
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"midi_channel": 2,
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"mixer_slot": 2,
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"notes_template": "piano_stabs"
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"notes_template": "piano_stabs_section_aware"
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},
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"lead": {
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"description": "Brass hit o melodia sintetizada. Hook del coro.",
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"description": "Brass hit o melodia sintetizada. Hook syncopation on dembow positions (4, 11, 12). Section-aware density.",
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"pattern_type": "brass_hook",
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"preferred_plugins": ["Serum 2", "Omnisphere", "Harmor", "Electra", "ravity(S)"],
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"midi_channel": 3,
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"mixer_slot": 3,
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"notes_template": "lead_hook"
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"notes_template": "lead_hook_section_aware"
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},
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"pad": {
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"description": "Pad atmosferico sutil para llenar el fondo.",
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"description": "Pad atmosferico sutil para llenar el fondo. Sustained chord tones.",
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"pattern_type": "sustained_pad",
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"preferred_plugins": ["Harmor", "Serum 2", "Omnisphere", "FLEX", "Pigments"],
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"midi_channel": 4,
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@@ -83,7 +109,7 @@
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"popularity": 0.9
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},
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{
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"name": "tensión",
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"name": "tension",
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"chords": ["Am", "F", "C", "G"],
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"beats_per_chord": 4,
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"popularity": 0.7
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@@ -152,5 +178,11 @@
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"Rumor de Guerra - Hector El Father",
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"Pose - Daddy Yankee",
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"Llamé Pa Verte - Wisin y Yandel"
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]
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],
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"analysis_notes": {
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"key_finding": "The dembow IS present (positions 0, 4, 8, 11, 12 high across all instruments) but it's buried in a DENSE drum loop, NOT the textbook sparse kick-snare pattern.",
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"kick_insight": "Position 4 (beat 2) is the DENSEST kick hit — not beat 1. Real tracks have kicks on almost EVERY 16th note position.",
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"gap_break_technique": "1-2 bars near-silence (-50dB) followed by loud DROP (+6dB over baseline) creates massive contrast. This is a signature reggaetón technique.",
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"filter_sweeps": "Spectral centroid drops detected in breakdowns, confirming HPF filtering in intro/filtered sections."
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}
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}
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