Deep demucs drum study findings:
- Kick: 8th note pulse (NOT 4otf), ghost doubles before drop
- Cymbal: THE defining texture, upbeat 8ths throughout most of track
- Clap: appears late (~200s) on contretemps (beats 1&3), ~1200Hz dry snap
- Drop at 2:20: kick disappears, pure cymbal upbeat 8ths
- Arrangement: kick 8ths → cymbal break → kick+cymbal+clap climax

Changes:
- d1 kick: rewritten as 8th note pulse, ^29 ghost double control
- d2 clap: ^43 ON = contretemps (beats 1&3), OFF = backbeat
- d3 hats: OH on every upbeat 8th, ^44 toggles cymbal breakdown mode