// Walter's Walk — Led Zeppelin
// 170 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: metre changes (4/4 at bar 1, 2/4 at bar 32, 4/4 at bar 32, 2/4 at bar 78, ...) are rendered on a constant 4/4 grid of one bar per cycle
// note: duplicate parts dropped: ch 8 "Electric Guitar V" distortion guitar (copy of ch 7 "Electric Guitar IV" distortion guitar); ch 11 "Bass Guitar II" slap bass 1 (copy of ch 9 "Bass Guitar" fretless bass)
// note: Full arrangement: all 198 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
setcpm(170/4)

// Notation: c3@3 lasts 3 steps · ~ is a rest · [c3,e3] is a chord · "a, b" plays two voices at once · [...]/2 spreads a riff over 2 bars.
// A part's distinct bars are riffs (A, B, C...) played in order: edit a riff to change every repeat.

// other · distortion guitar · "Electric Guitar I"
const distortion_guitar = note("<~@109 A B C D@2 E F@3 G H I@2 J K L@2 ~@72>".pickRestart({
  A: "~@5 [a5,a#5]!2 a5", B: "g5 ~@5 a5@2 a#5@2 [a5,a#5]@2 [a5,a#5]@2 a5@2", C: "g5 ~@5 [a5,a#5]@2 ~@2 a5@2 a#5@2 a5@2",
  D: "[g5 ~@3 e5@2 e5@2 [g4,g#4]@2 e5@9 ~@3 a5 ~@3 a5@2 a#5@2 a5@2]/2", // G#maj7
  E: "g5 ~ e5@2 g5@2 [a5,a#5]@2 ~@2 a5@2 a#5@2 a5@2", // A#maj7
  F: "[g5@2 ~@4 [a5,a#5]@2 ~@2 a5@2 a#5@6 a5@2 g5@2 e5@2 [g4,g#4]@2 e5@9 ~@9 a5@4]/3", // A#maj7 G#maj7
  G: "a#5@4 b5@3 ~ [a5,b5]@2 [a5,b5]@2 a5@2 g5@2", H: "~@3 b5@2 b5@2 [a5,b5], ~@6 a5 ~@3 a5 ~@5",
  I: "[[a5,b5]@2 a5@2 g5@2 g4@2 a4@2 e5@11 ~ a5@2 ~@2 a5@3 ~ a5@2]/2", J: "a#5@2 ~ [a5,b5] ~ [a5,b5] ~ a5, a5 ~@15",
  K: "g5@3 ~@3 [a5,b5]@2 ~@2 a#5@4 [a5,b5]@2, ~@10 a5 ~@5", L: "[g5@2 g4@2 e5@2 e5@2 [g4,g#4]@2 e5@13 ~@9]/2",
})).s("gm_distortion_guitar").gain(0.53).pan(0.7)

// other · overdriven guitar · "Electric Guitar II"
const overdriven_guitar = note(`<
  ~@70 A B C D E F G H@4 ~@4 I J K L M J K L N ~@31 O P F Q R P S@4 ~@4 T@4 U@4 V ~@25 W X W X W X W X W X W X W X W X W
  X W X W X W X ~
>`.pickRestart({
  A: "~@7 d#3", B: "e3 f#3 a3 c#3 ~ d#3 e3 f#3", C: "a3 b3 ~ d#3 e3 f#3 a3 b3", D: "~ d#3 e3 f#3 a3 f#3 g3 e3",
  E: "c#3 d#3 e3 f#3 a3 c#3 ~ d#3", F: "e3 f#3 a3 b3 ~ d#3 e3 f#3", G: "a3 b3 ~ d#3 e3 f#3 a3 f#3",
  H: "[g3@2 e3@2 c#3@2 d3@49 ~@9]/4", I: "~@3 g3@2 g3 [a3,d4] [a#3,d4]",
  J: "[b3,e4]@2 [d4,g4,b4]@3 ~ g3@5 ~ a3@2 a#3@2", K: "b3@2 [d4,g4]@3 ~ g3@4 g3@2 [a3,d4]@2 [a#3,d4]@2",
  L: "[b3,e4]@2 [d4,g4,b4]@2 ~@2 [e4,a4]@2 ~@2 [e4,a4]@3 ~ g4@2", M: "g#4 e4 b3 g3@2 g3 [a3,d4] [a#3,d4]",
  N: "g#4@2 e4@3 ~@11", O: "~@3 d#3 e3 f#3 a3 c#3", P: "~ d#3 e3 f#3 a3 b3 ~ d#3", Q: "a3 f#3 g3 e3 c#3 d#3 e3 f#3",
  R: "a3 c#3 ~ d#3 e3 f#3 a3 b3", S: "[e3@2 f#3@2 a3@2 f#3@2 g3@2 e3@2 c#3@2 d3@49 ~]/4",
  T: "[~@14 g3@4 g3@2 [a3,d4]@2 [a#3,d4]@2 [b3,e4]@2 [d4,g4,b4]@3 ~ g3@5 ~ a3@2 a#3@2 b3@2 [d4,g4]@3 ~ g3@4 g3@2 [a3,d4]@2 [a#3,d4]@2 [b3,e4]@2 [d4,g4,b4]@2 ~@2 [e4,a4]@2]/4", // D5 A# E5 G G5 D5 A# E5 …
  U: "[~@2 [e4,a4]@3 ~ g4@2 g#4@2 e4@2 b3@2 g3@4 g3@2 [a3,d4]@2 [a#3,d4]@2 [b3,e4]@2 [d4,g4,b4]@3 ~ g3@5 ~ a3@2 a#3@2 b3@2 [d4,g4]@3 ~ g3@4 g3@2 [a3,d4]@2 [a#3,d4]@2 [b3,e4]@2 [d4,g4,b4]@2 ~@2 [e4,a4]@2]/4", // A5 D5 A# E5 G G5 D5 A# …
  V: "~@2 [e4,a4]@3 ~ g4@2 g#4@2 e4@3 ~@3", W: "~@7 d3", X: "e3!2 e2 ~ e3 e2 ~@2",
})).s("gm_overdriven_guitar").gain(0.53).pan(0.7)

// chords · overdriven guitar · "Electric Guitar III"
const overdriven_guitar_2 = note(`<
  ~@50 A B@2 C D@4 E@4 F@4 G@4 H@3 ~@5 I@3 J@4 K ~@4 L@3 ~@4 M@4 N@4 O@4 P I@3 Q@4 R@8 K ~@6 S@3 T@4 U ~@34 V W V W V W
  X W X W X W X W X W X W X W Y W Y ~
>`.pickRestart({
  A: "~@14 [a3,d4,f#4] ~", B: "[[b3,e4,g#4]@29 ~ [a3,d4,f#4]@2]/2", C: "[b3,e4,g#4]@13 ~ b3@2",
  D: "[~@2 b3@2 ~@2 e4@2 d4@2 b3@2 ~@2 g2@12 [d3,g3,b3]@3 ~ [d3,g3,b3]@12 ~@6 [d3,g3,b3]@13 ~ [e3,a3]@2, ~@21 [d3,g3,b3]@3 ~@8, ~@46 g2@15 ~@3]/4", // G A5 G
  E: "[~ a3 ~ g3 g#3 e3 b2 ~@22 [d3,g3,b3] ~ [e3,a3], ~@7 g2@8 g2@8 g2@7 ~@2, ~@13 [d3,g3,b3]@8 [d3,g3,b3]@8 ~@3]/4", // G A5 G
  F: "[~@2 a3@2 ~@2 g3@2 g#3@2 e3@2 b2@2 g2@9 ~@3 [d3,g3,b3]@16 ~@4 g2@15 ~ [e3,a3]@2, ~@42 [d3,g3,b3]@19 ~@3]/4", // G A5 G
  G: "[~@2 [e3,a3]@2 ~@2 g3@2 g#3@2 e3@2 b2@2 g2@9 ~@7 g2@9 ~@7 g2@9 ~@7 [e3,a3]@2, ~@26 [d3,g3,b3]@16 [d3,g3,b3]@19 ~@3]/4", // A5 G
  H: "[~@2 [e3,a3]@2 ~@2 g3@2 g#3@2 e3@2 b2@2 [e3,a3]@33 ~]/3", // A5
  I: "[~ [g2,d3,g3,b3]@8 [g2,d3,g3,b3]@10 [e3,a3] ~ [e3,a3] ~ g3]/3", // G A5
  J: "[g#3 e3 b2 ~@16 g2@8 [e3,a3] ~ [e3,a3] ~ g3, ~@3 g2@8 g2@8 ~@13, ~@9 [d3,g3,b3]@8 [d3,g3,b3]@10 ~@5]/4", // A5 G
  K: "g#3 e3 ~@6", L: "[~@2 [g2,d3,g3,b3]@3 ~ [g2,d3,g3,b3]@12 [g2,d3,g3,b3]@17 ~@13]/3",
  M: "[~@6 [a3,d4,f#4] ~ [b3,e4,g#4]@29 ~ [a3,d4,f#4]@2 [b3,e4,g#4]@11 ~@3 [b3,e4]@2 ~@2 [b3,e4]@2 ~@2 [b3,e4]@2]/4", // D E D E E5
  N: "[[a3,d4]@2 [b3,e4]@2 ~@2 e2@5 ~ [e4,g#4,c#5]@2 [d4,f#4,b4]@4 [e4,g#4,c#5]@2 [d4,f#4,b4]@2 ~@2 e2@3 ~ [e4,g#4]@2 [d4,f#4]@4 [e4,g#4]@2 [a3,d4]@2 ~@2 e2@3 ~ [e4,g#4,c#5]@2 [d4,f#4,b4]@4 [e4,g#4,c#5]@2 [d4,f#4,b4]@2 ~@2 g3@2 d4 e4@2 d4 e4@2]/4", // D5 E5 C#m Bm C#m Bm E D …
  O: "[b3 a3 g3@2 f#3 e3 d3@2 e2@3 ~ [e4,g#4,c#5]@2 [d4,f#4,b4]@4 [e4,g#4,c#5]@2 [d4,f#4,b4]@2 ~@2 e2@3 ~ [e4,g#4]@2 [d4,f#4]@4 [e4,g#4]@2 [a3,d4]@2 ~@2 e2@3 ~ [e4,g#4,c#5]@2 [d4,f#4,b4]@4 [e4,g#4,c#5]@2 d4@2 [e2,e3]@4 [e2,e3]@3 ~ [e2,e3]@2]/4", // C#m Bm C#m Bm E D E D5 …
  P: "[e2,e3]!2 ~@6", // E
  Q: "[g#3@2 e3@2 b2@2 ~@16 d3@9 ~@3 [g2,d3,g3,b3]@20 [e3,a3]@2 ~@2 [e3,a3]@2 ~@2 g3@2, ~@3 d3@8 ~@21, ~@9 [g3,b3]@8 ~@15]/4", // G A5 G
  R: "[g#3 e3 b2 ~@22 [d3,g3,b3] ~ [e3,a3] ~ a3 ~ g3, ~@3 g2@8 g2@8 g2@7 ~@6, ~@9 [d3,g3,b3]@8 [d3,g3,b3]@8 ~@7]/4", // G A5 G
  S: "[~@10 g3@16 g3@16 g3@3 ~ [e3,a3]@2]/3", // A5
  T: "[~@2 [e3,a3]@2 ~@2 g3@2 g#3@2 e3@2 b2@2 g3@15 ~@17 g2@12 [g3,b3]@2 [g3,b3]@2 [e3,a3]@2, ~@15 g3@14 ~@3]/4", // A5 G A5
  U: "~ [e3,a3] ~ g3 g#3 b2 g2 ~", V: "~@7 [d4,f#4,b4]", W: "~@2 [d4,f#4,b4]@13 ~",
  X: "[e4,g#4,c#5]@11 ~@3 [d4,f#4,b4]@2", Y: "[e4,c#5]@11 ~@3 [d4,f#4,b4]@2",
})).s("gm_overdriven_guitar").gain(0.43).pan(0.3)

// chords · distortion guitar · "Electric Guitar IV"
const distortion_guitar_2 = note(`<
  A B C D E F G D H I@2 J K L I J K I@2 J K I@2 J M N O P Q R S@4 T@4 U@4 V@4 W@3 X Y@4 Z@4 AA@12 AB AC AD AE AF AG AH
  AI I@2 J K I@2 J K AJ@2 AK AL AM@2 AN AO@4 AP@4 E AQ AR AS AT AU AV AW AX I@2 J K I@2 J K I@2 J K I@2 J M N O P Q R
  S@4 AA@4 AY@4 V@4 AZ@4 BA@4 BB@4 BC BD@3 BE BF@7 BG BH BI@2 BJ BK BL BM BN BO BP BO BP BO BP BO BP BO BP BO BP BO BP
  BO BP BO ~
>`.pickRestart({
  A: "~@3 [a3,d4]@2 b3 [d4,g4] [b3,d4,g4]", B: "[d4,g4] e4 a2 [a3,d4]@2 [b3,d4,g4] [g4,g#4] b3",
  C: "[d4,g4] [e4,g4] e2 [a3,d4]@2 b3 [d4,g4] b3", D: "[d4,g4] [e4,g#4] [e2,a2] [e3,b3] ~ [e3,b3] ~ [e3,b3]",
  E: "[d3,a3] [e3,b3] ~ [a3,d4]@2 b3 [d4,g4] b3", F: "g4 [a3,d4] ~ [a3,d4]@2 b3 [d4,g4] d4",
  G: "[d4,g4] [g4,b4] ~ [a3,d4]@2 b3 [d4,g4] b3", H: "[d3,a3] [e3,b3] ~ g2@2 d3 a2 a#2",
  I: "b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2", J: "b2@2 [d3,g3]@2 ~@2 [a2,e3,a3]@2 ~@2 [a2,e3,a3]@3 ~ g3@2",
  K: "g#3 e3 b2 g2@2 g2 a2 a#2", L: "b2@2 [d3,g3]@3 ~ g2@5 ~ a2@2 a#2@2", M: "g#3 e3 d3 c3 c#3 e3 f#3 a2",
  N: "~ c3 c#3 e3 f#3 [g3,b3] ~ c3", O: "c#3 e3 f#3 [g3,b3] ~ [c3,e3] [c#3,e3] e3", P: "f#3 e3 c3 c#3 a2 c3 c#3 e3",
  Q: "f#3 a2 ~ c3 c#3 e3 f#3 [g3,b3]", R: "~ [c3,e3] c#3 e3 f#3 [g3,b3] ~ c3",
  S: "[c#3@2 e3@2 f#3@2 e3@2 c3@2 c#3@2 a2@2 g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@2 ~@2 [a2,e3,a3]@2]/4", // G5 A5
  T: "[~@2 [e3,a3,c#4]@3 ~ g3@2 g#3@2 e3@2 b2@2 g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@2 ~@2 [a2,e3,a3]@2]/4", // A G5 A5
  U: "[~@2 [e3,a3,c#4]@3 ~ g3@2 g#3@2 e3@2 b2@2 g2@4 g2@2 a2@2 a#2@2 b2@2 [d4,g4]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d4,g4]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d4,g4]@3 ~ [e4,a4]@2]/4", // A G5 A5
  V: "[~@2 [e4,a4]@3 ~ g4@2 g#4@2 e4@2 b3@2 g3@4 g3@2 a3@2 a#3@2 b3@2 [d4,g4]@3 ~ g3@4 g3@2 a3@2 a#3@2 b3@2 [d4,g4]@3 ~ g3@4 g3@2 a3@2 a#3@2 b3@2 [d4,g4]@3 ~ [e4,a4]@2]/4", // A5 G5 A5
  W: "[~@2 [e4,a4]@3 ~ g4@2 g#4@2 e4@2 ~@2 e3@31 ~ [d3,a3]@2]/3", X: "[e3,b3]@2 e2@11 ~ [e3,b3]@2",
  Y: "[~@2 [e3,b3]@2 ~@2 [e3,b3]@2 [d3,a3]@2 [e3,b3]@2 ~@2 e2@31 ~ e2@15 ~ [e3,b3]@2]/4", // E5 D5 E5
  Z: "[~@2 [e3,b3]@2 ~@2 [e3,b3]@2 [d3,a3]@2 [e3,b3]@2 ~@2 g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@2 ~@2 [a2,e3,a3]@2]/4", // E5 D5 E5 G5 A5
  AA: "[~@2 [a2,e3,a3]@3 ~ g3@2 g#3@2 e3@2 b2@2 g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@3 ~ g2@4 g2@2 a2@2 a#2@2 b2@2 [d3,g3]@2 ~@2 [a2,e3,a3]@2]/4", // A5 G5 A5
  AB: "~@2 [a2,e3,a3]@3 ~ g3@2 g#3@2 e3@2 d3@2 c3@2", AC: "c#3 e3 f#3 a2 ~ c3 c#3 e3",
  AD: "f#3 [g3,b3] ~ c3 c#3 e3 f#3 [g3,b3]", AE: "~ [c3,e3] [c#3,e3] e3 f#3 e3 c3 c#3", AF: "a2 c3 c#3 e3 f#3 a2 ~ c3",
  AG: "c#3 e3 f#3 [g3,b3] ~ [c3,e3] c#3 e3", AH: "f#3 [g3,b3] ~ c3 c#3 e3 f#3 e3", AI: "c3 c#3 a2 g2@2 g2 a2 a#2",
  AJ: "b2@2 [d4,g4]@3 ~ g2@4 g2@2 a2@2 a#2@2", AK: "b2@2 [d4,g4,b4]@2 [e4,a4]@3 ~@3 [e4,a4]@3 ~ g4@2",
  AL: "g#4 e4 b3 g3@2 g3 a3 a#3", AM: "b3@2 [d4,g4]@3 ~ g3@4 g3@2 a3@2 a#3@2",
  AN: "b3@2 [d4,g4]@3 ~ [e4,a4]@2 ~@2 [e4,a4]@2 ~@2 g4@2", // G5 A5
  AO: "[g#4@2 e4@2 b3@2 [e2,e3,b3]@31 ~ [e2,e3,b3]@2 e2@13 ~ [e3,b3]@2 ~@2 [e3,b3]@2 ~@2 [e3,b3]@2]/4", // E5
  AP: "[[d3,a3]@2 [e3,b3]@3 ~ [e2,e3,b3]@31 ~ [e2,e3,b3]@2 e2@13 ~ [e3,b3]@2 ~@2 [e3,b3]@2 ~@2 [e3,b3]@2]/4", // D5 E5
  AQ: "[d4,g4] [e4,g#4] e4 [a3,d4]@2 b3 [d4,g4] b3", AR: "[d4,g4] [e4,g#4] ~ [a3,d4]@2 b3 [d#4,g#4] [b3,e4]",
  AS: "[d4,g4] e4 ~ [e3,b3] ~ [e3,b3] ~ [e3,b3]", AT: "[d3,a3] [e3,b3] ~ [a3,d4]@2 b3 [d4,g4] [b3,e4]",
  AU: "[d4,g4] [e4,g#4] ~ [a3,d4] b3!2 [d4,g4] [b3,e4]", AV: "[d4,g4] e4 ~ [a3,d4]@2 b3 [d4,g4] b3",
  AW: "[d4,g4] [e4,g#4] ~ [e3,b3] ~ [e3,b3] ~ [e3,b3]", AX: "[d3,a3] [e3,b3] ~ g2@2 g2 a2 a#2",
  AY: "[~@2 [a2,e3,a3]@2 ~@2 g3@2 g#3@2 e3@2 b2@2 g3@4 g3@2 a3@2 a#3@2 b3@2 [d4,g4]@3 ~ g3@4 g3@2 a3@2 a#3@2 b3@2 [d4,g4]@3 ~ g3@4 g3@2 a3@2 a#3@2 b3@2 [d4,g4]@3 ~ [e4,a4]@2]/4", // A5 G5 A5
  AZ: "[~@2 [e4,a4]@3 ~ g4@2 g#4@2 e4@2 ~@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [e4,g#4]@2 a2@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [e4,g#4]@2 a2@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 a2@2 e2@2 a4@2]/4", // A5 D5 G5 E D5 G5 E D5 …
  BA: "[b4@2 d5@2 b4@2 d5@2 [a4,c#5]@2 [g4,b4]@3 ~ [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [e4,g#4]@2 a2@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [e4,g#4]@2 ~@2 [a4,c5] [b4,d5]@3 [b4,d5]@2 [b4,d5]@2 [b4,d5]@2 [b4,d5]@2 [b4,d5]@2 [b4,d5]@2 [b4,d5]@2]/4", // A G D5 G5 E D5 G5 E …
  BB: "[[b4,d5]@2 [b4,d5]@2 a#4 a4 a4@2 a4@2 g4@2 e4@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [e4,g#4]@2 a2@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [e4,g#4]@2 a2@2 [a3,d4]@4 b3@2 [d4,g4]@2 b3@2 [d4,g4]@2 [b3,e4]@2 e2@2 a3@2]/4", // Bm D5 G5 E D5 G5 E D5 …
  BC: "g3 e3 g3 a3 b3 [d4,g4]!2 e4, ~@6 g2@9 ~", // G5
  BD: "[[b3,e4]!2 [a3,d4] b3 [a3,d4] [b3,e4] ~ [a3,d4]@2 b3 [d4,g4] b3 [d4,g4] e4 a2 [a3,d4]@2 b3 [d4,g4] e4 a2 a#4@2 d5, ~@42 g4 ~@5]/3", // E5 D5 E5 D5 G5 D5 G5
  BE: "[b4,d5]@3 ~ d5@2 b4@4 b4@3 ~@3", // Bm
  BF: "[g4 [b4,e5] ~@2 [b3,e4,a4]@2 ~@2 [d4,g4]@2 [e4,g#4]@2 [e3,b3]@2 [b4,d5]@4 [b4,d5]@2 [e4,a4]@2 ~@2 [d4,g4]@2 g#4@2 ~@2 [b4,d5]@4 [b4,d5]@2 [e4,a4] ~@3 [d4,g4]@2 [d4,g#4]@2 ~@2 a#4@2 b4@2 [b4,d5]@2 [e4,a4,c#5]@2 ~@2 [d4,g4]@2 [d4,g#4]@2 ~@2 e2@4 e2@2 [e3,b3]@2 ~@2 [d3,a3]@2 [e3,b3]@2 ~@2 [e3,b3]@4 [e3,b3]@2 [e3,b3]@3 ~ [d3,a3]@2 e3@2 ~@2 [e3,b3,e4]@4 [e3,b3,e4]@2 [d3,a3,d4]@3 ~ [e3,b3,e4]@2 [e3,b3,e4]@2 [e3,b3,e4]@2 [d3,a3]@2, ~@23 d5@2 ~@31]/7", // E5 Esus4 G5 E E5 Bm A5 G5 …
  BG: "~ [a2,e3] ~ [g2,d3] ~ [a2,e3] ~ [e3,b3]", // A5 G5 A5 E5
  BH: "[e3,b3]@2 ~@2 [e3,b3]@2 [d3,a3]@2 [e3,b3]@2 [e3,b3]@3 ~ [e2,e3,b3]@2", // E5 D5 E5
  BI: "[~ [e2,e3,b3] ~ [e2,e3,b3]!3 [e3,b3] [d3,a3]@2 [e3,b3,e4]!2 ~ [e3,b3,e4]!2 ~ [a3,d4,f#4,b4]]/2", // E5 D5 E5 Bm7
  BJ: "~@2 [a3,d4,f#4,b4]@5 ~ [a3,d4,f#4,b4]@2 b3@2 e2@2 e2@2", BK: "e2!2 [e3,b3] ~ [e3,a3] [e3,b3] ~ [a3,d4]",
  BL: "~@2 [a3,d4]@9 ~ b3@2 [a3,d4]@2", BM: "[e3,b3,e4]!2 e2 ~ e3 e2!2 [a3,d4]", BN: "~@2 [a3,d4]@13 ~",
  BO: "[e3,b3]!2 e2 ~ e3 e2 ~ [a3,d4]", BP: "~@2 [a3,d4]@11 ~ d3@2",
})).s("gm_distortion_guitar").gain(0.39).pan(0.9)

// bass · fretless bass · "Bass Guitar"
const bass = note(`<
  ~@3 A B C D E F G H I J K H I J K H I J K H I L@2 M N O P Q R@3 S@12 T@3 U V U W U X@4 S@12 Y Z AA AB AC M AD AE K H I
  AF K H I AF K H I AF K H AG AH U AI AJ AK U AL AJ AM U@3 AN U@2 AJ AO K H I AF K H I AF K H I AF K H I L@2 M N O P Q
  AP@3 S@12 AQ ~@2 AR AS ~@2 AR V AT@2 AU V AV@3 U W AW W AX AY@2 AZ BA BB BC U BD W BE U BF BG BE W BH BI U BJ BK AV
  U@8 ~
>`.pickRestart({
  A: "~@6 e2@4 e2 ~@3 e2@2", B: "e2@2 e2@2 ~@2 e1@9 ~", C: "e1@2 e1@2 e2@2 e1@9 ~", D: "e1!2 e2 e1@2 e2!3",
  E: "e2@2 e2@2 e2@2 e2@2 ~@2 e2 ~@3 e2@2", F: "e2!2 ~ g1@2 ~ a1 a#1", G: "b1 d2 ~ g1@2 g1 a1 a#1",
  H: "b1@2 d2@2 ~@2 g1@5 ~ a1@2 a#1@2", I: "b1 d2 ~ a1 ~ a1 ~ e1", J: "g1 e1 ~ g1@2 g1 a1 a#1",
  K: "b1 d2 ~ g1@2 ~ a1 a#1", L: "[g1 e1!2 c2 c#2 e2 f#2 a1@2 c2 c#2 e2 f#2 g2 ~ c2]/2", M: "c#2 e2 f#2 g2 ~ c2 c#2 e2",
  N: "f#2 e2 c2 c#2 a1 c2 c#2 e2", O: "f#2 a1 ~ c2 c#2 e2 f#2 g2", P: "~ c2 c#2 e2 f#2 g2 ~ c2",
  Q: "c#2 e2 f#2 e2 c2 c#2 a1 g1",
  R: "[~@2 g1@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@4 ~@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@5 ~ a1@2 a#1@2 b1@2 d2@2 ~@2 a1@2]/3",
  S: "[~@2 a1@2 ~@2 e1@2 g1@2 e1@2 f#1@2 g1@4 g1@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@4 ~@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@5 ~ a1@2 a#1@2 b1@2 d2@2 ~@2 a1@2]/4",
  T: "[~@2 a1@2 ~@2 e1@2 e1@2 e1@2 f#1@2 e1@33 ~]/3", U: "e2!8", V: "~ e2 ~ e2!5", W: "e2!7 e1",
  X: "[~@2 e2@2 ~@2 e2@2 e2@2 e2@2 ~@2 g1@4 g1@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@4 ~@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@5 ~ a1@2 a#1@2 b1@2 d2@2 ~@2 a1@2]/4",
  Y: "~ a1 ~ e1 g1 e1!2 c2", Z: "c#2 e2 f#2 a1@2 c2 c#2 e2", AA: "f#2 g2 ~ c2 c#2 e2 f#2 g2",
  AB: "~ c2 c#2 e2 f#2 e2 c2 c#2", AC: "a1 c2 c#2 e2 f#2 a1 ~ c2", AD: "f#2 g2 ~ c2 c#2 e2 f#2 e2",
  AE: "c2 c#2 a1 g1!3 a1 a#1", AF: "g1 e1 f#1 g1@2 g1 a1 a#1", AG: "b1 d2 ~ a1 ~ a1 ~ a1",
  AH: "e1@2 e1!2 g1@2 e1@2 e2@2 e2@2 e2@2 e2@2", AI: "e2!3 e1 e2!4", AJ: "e2!4 ~ e2 ~ e2", AK: "d2 e2 ~ e1@2 e2!3",
  AL: "e1 e2!7", AM: "e2!2 ~ e2@2 e2!3", AN: "e2!3 e2@2 e2!3", AO: "e2!2 ~ g1@2 g1 a1 a#1",
  AP: "[g1@2 g1@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@4 ~@2 a1@2 a#1@2 b1@2 d2@2 ~@2 g1@5 ~ a1@2 a#1@2 b1@2 d2@2 ~@2 a1@2]/3",
  AQ: "~ a1 ~ e1 g1 e1 ~@2", AR: "~@7 e2", AS: "~ e2 ~ e2!3 ~@2", AT: "d2 e2 e1!6", AU: "d2 e2!3 d2 e2!3",
  AV: "e1!2 e2!6", AW: "~ e1 e2!5 e1", AX: "~ e1 e2!4 d2 e2",
  AY: "[e2@2 e2@2 e2@2 e2@2 d2@2 e2@3 ~ e2@4 e2@2 e2@2 e2@2 e2@2 e2@2 e2@2 e2@2]/2", AZ: "e2!4 e1!3 e2",
  BA: "e2@2 e2@2 e2@3 ~ d2@2 e2@2 e2@2 e1@2", BB: "e2 ~ e2 ~ e2!3 e1", BC: "~ e1 ~ e1 e2!4", BD: "~ e2!7",
  BE: "~ e1 e2!6", BF: "e2@2 e2@2 a1@2 a1@2 g1@2 a1@2 g1@3 ~", BG: "e1!2 e2!5 e1", BH: "~ e1 e2!4 c#2!2",
  BI: "e1!6 e2!2", BJ: "e2!2 e1 ~ e2 e1 ~ c#2", BK: "c2 b1!2 c#2!3 b1!2",
})).s("gm_fretless_bass").gain(0.63)

// drums · kick
const kick = s("bd").struct(`<
  ~@3 A B@3 C B@16 D@3 B D@2 E F@15 G H I J K I@2 J L F@15 G D@2 E G D@2 B@16 H M H C@2 M H C@2 M H B C M H C B@16 D@3 B
  D@2 E F@15 G ~@2 N O ~@2 N O J L K P J L K Q J L K R J L K R J L K R J L K R J L K R J L K G K G K G K G K G K ~
>`.pickRestart({
  A: "~@3 x ~ x ~ x", B: "x!2 ~ x ~ x ~@2", C: "x!2 ~ x ~ x ~ x", D: "x!2 ~@2 x!2 ~@2", E: "x!2 ~@2 x!2 ~ x",
  F: "~ x ~@2 x!2 ~ x", G: "~ x ~@2 x!2 ~@2", H: "x ~@2 x!2 ~@2 x", I: "~ x ~ x!2 ~@2 x", J: "x ~@2 x!3 ~ x",
  K: "x!2 ~ x!3 ~ x", L: "~ x ~ x!3 ~ x", M: "x ~@2 x ~ x ~ x", N: "~@7 x", O: "x!2 ~ x!3 ~@2", P: "x!2 ~ x ~@4",
  Q: "x", R: "x!2 ~ x!2 ~@2 x",
})).gain(0.63)

// drums · snare
const snare = s("sd").struct(`<
  ~@3 A B C@2 D B C@40 E F C@2 E F C@38 G C@2 D B C@2 D B C@6 D B C@38 ~@2 H I ~@2 H J C@3 K C@3 L C@33 ~
>`.pickRestart({
  A: "~@3 x ~ x ~ x", B: "x!2 ~@4 x ~", C: "~ x ~ x", D: "~@2 x!2 ~ x ~ x", E: "~@2 x ~@3 x!2", F: "~ x ~ x!3 ~@2",
  G: "~@2 x!3 ~@7 x ~@3", H: "~@7 x", I: "x!2 ~ x!3 ~@2", J: "x!2 ~ x!5", K: "~@4 x ~@3 x ~ x!3 ~@3",
  L: "~@2 x!2 ~ x!11",
})).gain(0.63)

// drums · low tom
const low_tom = s("lt").struct("<~@97 A B ~@2 A B ~@2 A B ~@91>".pickRestart({
  A: "~@3 x", B: "x!2 ~@2",
})).gain(0.63)

// drums · pedal hat
const pedal_hat = s("hh").struct(`<
  ~@4 A B@2 C A B@3 D B@3 D B@3 D B@3 D B@6 E B@3 E B@3 E B@3 E B@6 ~ E B@2 ~ E B@3 E B@3 E B@3 E B@3 E B@5 D B@3 D B@3
  D B@3 D B@3 F B@2 C ~ G B C ~ G B@2 C G B C A B@3 D B@3 D B@3 D B@3 D B@6 E B@2 E B@2 E B@2 E B@2 E B@3 ~@8 B@3 H B@3
  I E B@22 G B G B G B G B G B ~
>`.pickRestart({
  A: "~@3 x", B: "x!4", C: "x!2 ~@2", D: "x!2 ~ x", E: "~ x!3", F: "x ~ x!2", G: "~@2 x!2", H: "x!3 ~", I: "x",
})).gain(0.63)

// drums · high tom
const high_tom = s("ht").struct("<~@7 A B ~@126 C ~@2 C ~@2 C ~@2 C ~@53>".pickRestart({
  A: "~@5 x ~ x", B: "x!2 ~ x ~@4", C: "x",
})).gain(0.63)

// drums · crash
const crash = s("cr").struct(`<
  ~@3 A B ~@2 C ~@4 C ~@3 C ~@3 C ~@3 D ~@5 E ~@3 E ~@3 E ~@3 E ~@7 E ~@3 E ~@3 E ~@3 E ~@3 E ~@4 F ~@5 C ~@3 C ~@3 C
  ~@3 C ~@6 A B ~@2 A B ~@3 C ~@2 C ~@89
>`.pickRestart({
  A: "~@3 x ~ x ~ x", B: "x!2 ~ x ~@4", C: "~@3 x ~@4", D: "~ x", E: "~@7 x", F: "x",
})).gain(0.63)

// drums · cowbell
const cowbell = s("cb").struct("<~@135 A ~@2 A ~@2 A ~@2 A ~@53>".pickRestart({
  A: "x",
})).gain(0.63)

stack(
// … 3 more lines