// Diamond Head — The Ventures
// 140 bpm, 4/4, key A minor. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: pitch bends are ignored
// note: sustain pedal (CC 64) lengthens the held notes
// note: duplicate parts dropped: ch 4 "Muted notes" electric guitar muted (copy of ch 3 "Muted notes" electric guitar muted)
// note: Full arrangement: all 81 bars on a 16-step grid, each part at one level; ghost notes are separate "_soft" parts. Source detail keeps the original performance.
setcpm(140/4)

// 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.

// bass · electric bass pick · "Bass"
const bass = note(`<
  A@2 B@5 C B@3 C B@2 D@2 B@2 D@2 E ~ B C B@3 C B@2 D@2 B@2 D@2 E ~ F@2 B@2 F@2 G@2 B@5 C B@3 C B@2 D@2 B@2 D@2 E ~ B C
  B@3 C B@2 D@2 B@2 D@2 E
>`.pickRestart({
  A: "e1@3 ~ g1@3 ~ e1@3 ~ g1@3 ~", B: "a1@3 ~ c2@3 ~ d#2@2 e2@2 c2@3 ~", C: "g1@3 ~ b1@3 ~ g1@3 ~ b1@3 ~",
  D: "d2@3 ~ f2@3 ~ d2@3 ~ f2@3 ~", E: "e1@3 ~ e1@3 ~ e1@3 ~ e1@3 ~", F: "d1@3 ~ f1@3 ~", G: "e1!8",
})).s("gm_electric_bass_pick").gain(0.35)

// chords · acoustic guitar steel · "Rhythm Guitar"
const acoustic_guitar_steel = note(`<
  ~@2 A@4 B C D@2 B C D@2 ~@2 D@2 ~@2 E ~ B C D@2 B C D@2 ~@2 D@2 ~@2 E ~ F@2 D@2 F@2 G@2 A@4 B C D@2 B C D@2 ~@2 D@2
  ~@2 E ~ B C D@2 B C D@2 ~@2 D@2 ~@3
>`.pickRestart({
  A: "[[a3,c4,e4]@61 ~@3]/4", B: "[a3,c4,e4]@13 ~@3", C: "[g3,b3,d4]@13 ~@3", D: "[[a3,c4,e4]@29 ~@3]/2",
  E: "[e3,b3]@3 ~ [e3,b3]@3 ~ [e3,b3]@3 ~ [e3,b3]@3 ~", F: "[f3,a3,d4]@3 ~ [f3,g#3,c4]@3 ~",
  G: "[[e3,g#3,b3]@29 ~@3]/2", // E
})).s("gm_acoustic_guitar_steel").gain(0.4).pan(0.2)

// chords · acoustic guitar steel · "Rhythm Guitar" · soft notes · E5
const acoustic_guitar_steel_2 = note("<~@80 [[e3,b3]@3 ~ [e3,b3]@3 ~ [e3,b3]@3 ~ [e3,b3]@3 ~]>")
  .s("gm_acoustic_guitar_steel").gain(0.2).pan(0.2)

// other · electric guitar muted · "Muted notes"
const electric_guitar_muted = note(`<
  [e3!4 b3!4 e3!4 b3!4]!2
  ~@19
  [e5!2 d5!2 b4!2 a4!2 g4!2 e4!2 d4!2 b3!2]
  ~@15
  [e5!2 d5!2 b4!2 a4!2 g4!2 e4!2 d4!2 b3!2]
  ~@27
  [e5!2 d5!2 b4!2 a4!2 g4!2 e4!2 d4!2 b3!2]
  ~@15
>`).s("gm_electric_guitar_muted").gain(0.35).pan(0.8)

// chords · electric guitar clean · "Lead"
const electric_guitar_clean = note(`<
  ~@5 A B C D@2 B C E@2 ~@2 F G ~@2 H A B C D@2 B I E@2 ~@2 F G ~@2 H ~ J@2 F G J@2 K L ~@3 A B C D@2 B C E@2 ~@2 F G
  ~@2 H A B C D@2 B C E@2 ~@2 F G ~@2 H
>`.pickRestart({
  A: "~@15 g#3, ~@7 g3", B: "a3@3 a3@2 c4 a3@2", C: "[g3,b3]@8 b3@2 c4@2 b3@2 ~ g#3, ~@7 g3",
  D: "[a3 ~@2 c4 ~@2 c4 ~@2 c4 ~@2 c4 ~@2 c4, ~ a4@3 b4@3 c5@3 b4@3 a4@3, ~@2 e4@2 ~ e4@2 ~ e4@2 ~ e4@2 ~ e4@2]/2",
  E: "[a3 ~@2 c4 ~@2 c4 ~@2 c4 b4 a4 e4 ~@3, ~ a4@3 b4@3 c5@3 ~@6, ~@2 e4@2 ~ e4@2 ~ e4@2 ~@6]/2",
  F: "a4 g4 d4 c4, ~@8 e4 ~@7", G: "a3 g3 d3 c3, ~@8 e3 ~@7", H: "e4 d4 b3 g3, ~@8 c4 ~@7",
  I: "[g3,b3]@8 b3@2 c4@2 b3@2 g3 g#3", J: "~@2 [a3,d4,f4]!5 ~@3 [c4,f4,g#4]!5 ~", K: "[b3,e4,g#4]!8",
  L: "[b3,e4,g#4]@2 [b3,e4,g#4]@2 [b3,e4,g#4]@2 [b3,e4,g#4]@2 [b3,e4,g#4]@2 [a#3,d#4,g4] [a3,d4,f#4] [g#3,c#4,f4] [g3,c4,e4] [f#3,b3,d#4] [e3,a#3,d4]", // E D# D C# C B Em7b5
})).s("gm_electric_guitar_clean").gain(0.4)

// drums · rim
const rim = s("rim").struct("<~@14 A@2 ~@2 A@2 ~@10 A@2 ~@2 A@2 ~@22 A@2 ~@2 A@2 ~@10 A@2 ~@2 B ~@2>".pickRestart({
  A: "x ~ x!3 ~ x ~ x ~ x!3 ~ x ~", B: "x ~ x!3 ~ x ~ x ~@7",
})).gain(0.3)

// drums · rim · soft notes
const rim_soft = s("rim").struct("<~@78 [~@10 x!3 ~ x ~] [x ~ x!3 ~ x ~ x ~ x!3 ~ x ~] ~>").gain(0.1)

// drums · kick
const kick = s("bd").struct(`<
  ~@2 A@12 ~@2 A@2 ~@4 A@8 ~@2 A@2 ~@4 A@6 B@2 A@12 ~@2 A@2 ~@4 A@8 ~@2 A@2 ~@3
>`.pickRestart({
  A: "x ~@4 x ~@2", B: "x!8",
})).gain(0.35)

// drums · snare
const snare = s("sd").struct(`<
  ~ A B@12 ~@2 B@2 ~@2 C A B@8 ~@2 B@2 ~@2 C A B@6 ~ D B@12 ~@2 B@2 ~@2 C A B@8 ~@2 B@2 ~@2 C
>`.pickRestart({
  A: "~@3 x", B: "~@2 x!2 ~@2 x ~", C: "x!4", D: "x!8",
})).gain(0.4)

// drums · crash
const crash = s("cr").struct("<~@16 A ~@3 B ~@11 A ~@3 B ~ C@2 ~@2 C@2 ~@16 A ~@3 B ~@11 A ~@4>".pickRestart({
  A: "x", B: "x!4", C: "x!2",
})).gain(0.35)

// drums · crash · soft notes
const crash_soft = s("cr").struct("<~@80 [x!4]>").gain(0.1)

stack(
  bass, acoustic_guitar_steel, acoustic_guitar_steel_2, electric_guitar_muted, electric_guitar_clean, rim, rim_soft,
  kick, snare, crash, crash_soft
)