// Maggie Mae — The Beatles
// 174 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: pitch bends are ignored
// note: duplicate parts dropped: ch 5 "Gtr 2 Steel" acoustic guitar steel (copy of ch 4 "Gtr 1 Nylon" acoustic guitar nylon)
// note: Full arrangement: all 27 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
setcpm(174/4)

// Notation: c3@3 lasts 3 steps · ~ is a rest · [c3,e3] is a chord · [...]/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.

// bass · slap bass 2 · "Fretless E.Bass"
const bass = note("<~@2 A B C@2 D E F G H I J K L M N O P E Q R S T U V@2>".pickRestart({
  A: "c3!4", B: "e3 g3 e3 c3", C: "[g2@4 g2@4 g2@4 g2@2 ~ d3@5 d3@4 d3@4 a2@4]/2", D: "g2@7 ~ b2@7 ~", E: "d3",
  F: "d3 ~ e3 ~", G: "~@4 b2@7 ~ a2@4", H: "g2@2 g2@2 e3@2 g3 ~", I: "~@4 b2@7 ~@5", J: "c3@4 ~@3 c4 ~@7 c3",
  K: "e3@2 g3 ~ e3@2 c3@2", L: "a2!3 e3", M: "d3@4 ~@3 e3@4 d3@5", N: "g2@4 g2@2 ~ a2@5 ~@4", O: "g3 ~@3", P: "c3",
  Q: "~ g2@3", R: "a2", S: "g2", T: "c3@7 ~ b2@7 ~", U: "c3@4 ~@3 c3 ~@3 e3@4 ~", V: "[d3@4 ~@3 e3 ~@3 e3 ~@3 g3@17]/2",
})).s("gm_slap_bass_2").gain(0.54).pan(0.6)

// other · rock organ · "Organ 3"
const rock_organ = note("<~ A B@2 C@2 D E@2 F G@2 H@2 I J@2 ~@5 K@3 ~@2>".pickRestart({
  A: "e5", B: "[e5@4 c5@4 c5@3 c5@4 c5@5 ~@4 c5@3 c5@5]/2", C: "[b4@4 b4@4 b4@4 g4@3 b4@5 ~@7 b4@4 b4]/2",
  D: "b4@3 b4@5 b4@4 b4@4", E: "[c5@4 b4@4 b4@3 g4@4 f#4@5 ~@12]/2", F: "~@11 b4@4 g4",
  G: "[b4@4 b4@4 b4@4 b4@3 g4@4 g4@4 ~@8 g4]/2", H: "[c5@3 c5@4 c5 c5@4 c5@3 g4@5 c5@4 ~@8]/2", I: "b4!2 c5!2",
  J: "[a4@3 a4@5 a4@3 f#4@4 d4@9 ~@8]/2", K: "[f#5@5 ~]/3",
})).s("gm_rock_organ").gain(0.72)

// chords · acoustic guitar nylon · "Gtr 1 Nylon"
const acoustic_guitar_nylon = note("<A@2 B@2 C@4 D E C@2 B@2 F D G H I J K L@3 F ~@2>".pickRestart({
  A: "[g2,b2,d3,g3,b3,g4]/2", B: "[g2,c3,e3,g3,c4,g4]!4", C: "[g2,b2,d3,g3,b3,g4]!4",
  D: "[a2,d3,a3,c4,f#4]@2 ~ [a2,d3,a3,c4,f#4] [a2,d3,a3,c4,f#4]@4 [a2,d3,a3,c4,f#4]@4 [a2,d3,a3,c4,f#4]@4", // D7
  E: "[a2,d3,a3,c4,f#4]@4 [a2,d3,a3,c4,f#4]@4 [a2,d3,a3,c4,f#4]@3 [a2,d3,a3,c4,f#4] [a2,d3,a3,c4,f#4]@4", // D7
  F: "[a2,d3,a3,c4,f#4]!4", // D7
  G: "[g2,b2,d3,g3,b3,g4]@4 [g2,b2,d3,g3,b3,g4]@4 [g2,b2,d3,g3,b3,g4]@3 [g2,b2,d3,g3,b3,g4] [g2,b2,d3,g3,b3,g4]@4", // G
  H: "[g2,b2,d3,g3,b3,g4] ~@3", // G
  I: "[g2,c3,e3,g3,c4,g4]@4 [g2,c3,e3,g3,c4,g4]@3 [g2,c3,e3,g3,c4,g4] [g2,c3,e3,g3,c4,g4]@3 [g2,c3,e3,g3,c4,g4] [g2,c3,e3,g3,c4,g4]@4", // C
  J: "[g2,c3,e3,g3,c4,g4]@4 [g2,c3,e3,g3,c4,g4]@3 [g2,c3,e3,g3,c4,g4] [g2,c3,e3,g3,c4,g4]@3 [g2,c3,e3,g3,c4,g4] [g2,c3,e3,g3,c4,g4]@3 [g2,c3,e3,g3,c4,g4]", // C
  K: "[g2,b2,d3,g3,b3,g4]@4 [g2,b2,d3,g3,b3,g4]@3 [g2,b2,d3,g3,b3,g4] [g2,b2,d3,g3,b3,g4]@3 [g2,b2,d3,g3,b3,g4] [g2,b2,d3,g3,b3,g4]@4", // G
  L: "[g2,b2,d3,g3,b3,g4]@4 [g2,b2,d3,g3,b3,g4]@3 [g2,b2,d3,g3,b3,g4] [g2,b2,d3,g3,b3,g4]@3 [g2,b2,d3,g3,b3,g4] [g2,b2,d3,g3,b3,g4]@3 [g2,b2,d3,g3,b3,g4]", // G
})).s("gm_acoustic_guitar_nylon").gain(0.27).pan(1)

// drums · kick
const kick = s("bd").struct("<~@2 A@6 B A@8 C D ~ E ~ F E ~@2 G>".pickRestart({
  A: "x!2", B: "x ~@2 x", C: "x!3 ~", D: "x ~@14 x", E: "~@15 x", F: "~ x!2 ~", G: "x",
})).gain(0.45)

// drums · snare
const snare = s("sd").struct("<~@2 A@6 B A@2 C D E A@3 F ~@9>".pickRestart({
  A: "~ x ~ x", B: "~@3 x!2 ~@3 x ~@6 x", C: "~@4 x ~@6 x!2 ~@3", D: "~@3 x!2 ~@7 x ~@3", E: "~@4 x ~@6 x ~@3 x",
  F: "~@3 x ~@12",
})).gain(0.4)

// drums · hihat
const hihat = s("hh").struct("<~@2 A B C D C@2 ~ E C@3 F C@2 G ~@7 H I ~>".pickRestart({
  A: "x!3 ~", B: "x!2 ~ x", C: "~ x ~ x", D: "~ x ~@2", E: "~ x", F: "~@4 x ~@10 x", G: "~@4 x ~@2 x ~@4 x ~@2 x",
  H: "~@11 x ~@4", I: "x ~@6 x ~@4 x ~@3",
})).gain(0.4)

// drums · open hat
const open_hat = s("oh").struct("<~@2 A B C D C@2 E F C@3 D C@3 G ~ H G I J K L M ~>".pickRestart({
  A: "~@3 x", B: "~ x", C: "x!2", D: "x ~ x!2", E: "x!3 ~", F: "x!2 ~ x", G: "x", H: "~@3 x!2 ~@2 x!2 ~@3 x ~@3",
  I: "~@3 x!2 ~@3 x ~@2 x ~@3 x", J: "x ~@3 x ~@2 x!2 ~@3 x ~@2 x", K: "x ~@3 x ~@2 x!3 ~ x!2 ~@3",
  L: "x ~@3 x ~@3 x ~@6 x", M: "~@4 x ~@6 x ~@4",
})).gain(0.35)

// drums · crash
const crash = s("cr").struct("<~@17 [~ x] ~@9>").gain(0.35)

stack(bass, rock_organ, acoustic_guitar_nylon, kick, snare, hihat, open_hat, crash)