{
 "file": "HANDS-s6857183-Brandon-edit.gp",
 "sha256": "c7beeaeea846da44e7f094543c6eca45464c107570145530b21e52ee23eba57c",
 "built_from": "CODA-s6857183-Brandon-edit.gp",
 "parent_sha256": "97ea1b3b42c8383791b292328dbfea59c240fc39e71442fcef401c9d97367281",
 "removed": 15,
 "added": 0,
 "by_drum": {
  "40 snare": 13,
  "43 tom high floor": 2
 },
 "ride_notes_touched": 0,
 "ride_left_alone_because": "the ride threshold fits the author at MAE 7.03 with a 28% null fire rate, and the render shows it rejecting a real stroke at bar 55",
 "instances": {
  "before": 2799,
  "after": 2784
 },
 "bars_touched": [
  29,
  41,
  45,
  49,
  52,
  53,
  54,
  56,
  57,
  85,
  89
 ],
 "bars_touched_outside_plan": [],
 "three_hand_instants": {
  "before": 16,
  "after": 1,
  "remaining": "bar 55 beat 2, lanes 45+48+51, blocked under q-2026-09-08-b08085"
 },
 "separation": "snare stem reads 0.0000 to 0.0041 at the 13 refuted instants against 0.5355 and 0.5126 where it is real, 125x",
 "null_fire_rate": {
  "snare": 0.04,
  "toms": 0.04,
  "ride": 0.28
 },
 "calibration": {
  "snare": {
   "frac": 0.175,
   "mae": 1.27,
   "bars": 95
  },
  "toms": {
   "frac": 0.2,
   "mae": 0.82,
   "bars": 40
  },
  "ride": {
   "frac": 0.095,
   "mae": 7.03,
   "bars": 93
  }
 },
 "reference_class": "PASS on all six: 16 against 16 is 1.0x, 1.3 removals per bar, 16 of 48 lane-instances, nulls stated, threshold from the author, script three_hand_measure.py",
 "alignment_after": {
  "match": 0.708,
  "guitar_control": 0.181,
  "discrimination_x": 3.91,
  "before": {
   "match": 0.697,
   "guitar_control": 0.182,
   "discrimination_x": 3.83
  }
 },
 "copy_on_write_near_miss": "the first attempt edited shared beats in place and deleted 179 instances across 79 untargeted bars; beat 899 is referenced by 176 voices. Quarantined, redone with per-voice beat clones.",
 "eye_check": {
  "panels": 15,
  "confirmed": 15,
  "method": "stem of the removed lane, 0.7 s centred on the written instant, one panel per removal",
  "flat_at_zero": 9,
  "faint_but_nothing_on_the_line": {
   "41": 0.0007,
   "52": 0.0016,
   "54": 0.0041,
   "56": 0.0007,
   "57": 0.0003,
   "89": 0.0025
  },
  "image": "all15-removals.png",
  "note": "the earlier five-panel figure was a sample; this is the complete set"
 }
}