// Heart of Gold — Neil Young
// 95 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: pitch bends are ignored
// note: ch 2 "r guitar" named as a guitar, played on electric guitar clean (its violin patch is not one)
// note: sustain pedal (CC 64) lengthens the held notes
// note: Full arrangement: all 67 bars on a 16-step grid, each part at one level; ghost notes are separate "_soft" parts. Source detail keeps the original performance.
// note: Guitar parts that double another keep only their own notes (fills, solos): r guitar.
setcpm(95/4)

// 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.

// chords · electric guitar jazz · "r guitar 2"
const electric_guitar_jazz = note(`<
  ~ A B A C D E F G H I A B J K L M N O P Q R S P Q R S D E F G H I A B J K L M N O P Q R S P Q R S D E F G H I A B A B
  A B P Q R T@3
>`.pickRestart({
  A: "[e2,e5,e6]@4 [e2,g3,b3,d4,e4] ~ [e2,g3,b3,d4,e4] ~ [e2,g3,b3,d4,e4] ~ [e2,g3,b3,d4,e4] ~ [e2,g3,b3,d4,e4] ~ [e2,g3,b3,d4,e4] ~", // E Em7
  B: "[d3,a3,d4,f#4]@3 ~ [d3,a3,d4,f#4] ~@5 a2 b2 d3 ~ e3@2, ~@3 [e2,g3,b3,e4]@3 ~@2", // D Em
  C: "[d3,a3,d4,f#4]@3 ~ [d3,a3,d4,f#4] ~@5 a2 b2 d3@2 e3 ~, ~@3 [e2,g3,b3,e4]@4 ~", // D Em
  D: "[e3,g3,b3]@3 [e3,g3,b3] ~@3 e4, e2 c3, ~@5 g3@3, ~@3 c4", // Em
  E: "~@2 [d4,f#4] [g3,b3,d4]@3 [g3,b3,d4]@2, d3@3 ~@5, ~ a3@2 ~@5", F: "[e3,g3,b3]@2 ~ d4, ~ [c3,c4,e4], ~@5 g3@3",
  G: "[f#3,a3,d4]@4 [f#3,a3,d4]@2 [g3,b3]@6 [g3,b3]@3 ~, ~@6 g2@9 ~", // D G
  H: "[e3,g3,b3]@6 [e3,g3,b3]@2 e3 ~@5 e4@2, ~ [c3,g3], ~@5 e3@3, ~@3 c4", // Em C5
  I: "~@4 d4@2 g3 ~@5 g2@2 ~@2, f#3@3 d3@4 ~, ~ a3@2 g2@3 ~@2, ~@5 g3@2 ~",
  J: "[e2,e3,g3,b3] ~ [e3,g3,b3]!2 [c4,e4]!2 [c3,g3]!2, ~ [e3,g3,b3] ~@2 [c3,g3]@2 [c4,e4]@2, ~@3 e2@5 ~@8", // Em C C5 Em C5 C
  K: "[d3,f#3,a3,d4] ~ [f#3,a3,d4] [g3,b3,d4]@2 ~ [g3,b3,d4]!2, ~ [f#3,a3,d4] ~@3 [g3,b3,d4] ~@2, ~@3 d3@3 ~@5 [g2,d3]@5", // D G D G G5
  L: "[e3,g3,b3]@2 [e3,g3,b3]!2 [c3,g3,c4,e4] ~@2 [c3,g3], ~@5 [c4,e4] [c4,e4]@2, ~@11 [c3,g3]@3 ~@2", // Em C C5 C C5
  M: "[f#3,a3,d4]!3 [g2,d3,b3] ~ [g3,b3] g3!2, d3@6 g3 ~ [g3,b3]@2 ~@2 [b3,d4]@4, ~@9 [g2,d3]@7", // D G Bm G5
  N: "[e3,g3] ~ [e3,g3,b3]!2 [c3,g3,c4,e4] ~ [c4,e4]@2, [e2,b3]@3 e2@5 ~@3 [c3,g3]@5, ~ [e3,g3] ~@3 [c4,e4] ~@2", // Em C E5 C5 Em C
  O: "[d3,f#3,a3,d4]@2 ~@2 [f#3,a3,d4]@2 [g3,b3]@2 [g3,b3]@2 ~@2 [g3,b3]@2 [g2,d3] ~, ~ [f#3,a3,d4] ~@3 [g3,b3] ~@2, ~@3 d3@3 [g2,d3]@5 [g2,d3]@3 ~@2", // D G G5 D G G5
  P: "[e2,b2,e3] ~ [e2,b2,e3] ~ [e2,b2,e3] ~ [e2,b2,e3] ~ [e2,b2,e3] ~ [e2,b2,e3] ~ [e2,b2,e3] ~ e3@2", // E5
  Q: "~@2 b3 ~@3 [b3,d4]@2, g2, d3@5 d3@3, ~ g3@7, ~@3 b3@3 ~@2", // Bm
  R: "[c3,e3,g3,c4] ~ [c3,e3,g3,c4] ~@3 [c3,e3,g3,c4,e4]@5 ~ [c3,e3,g3,c4,e4]@3 ~", // C
  S: "~ [c3,e3,g3]@2 [g2,d3,g3,b3]@2 ~ [g3,b3] ~, [c4,e4]@3 ~@2 [g3,b3] ~@2, ~@11 [g2,d3]@4 ~", // C G C G G5
  T: "[~@2 [g2,d3,g3]@9 ~@5]/3", // G5
})).s("gm_electric_guitar_jazz").gain(0.5).pan(1)

// bass · electric bass finger · "bass"
const bass = note(`<
  ~ A B C D E F E G H F A B E F E G H F I J K L I J M L E F E G H F A B E F E G N F I J K L I J M O E F E G N F A B A B
  A B I J M P@3
>`.pickRestart({
  A: "e1@2 e1@6 e2 ~ e2@5 ~", B: "d2 ~ d2@3 ~ e1@4 a1 b1 d2@2 e2@2", C: "e1 ~ e1@6 e2 ~ e2@5 ~",
  D: "d2 ~ d2@3 ~ e1@4 a1 b1 d2 ~ e2@2", E: "e1 ~ e1@6 c2 ~ c2@5 ~", F: "d2 ~ d2@4 g1@5 ~ g1@2 f#1@2",
  G: "d2 ~ d2@4 g1@6 g2@2 f#2@2", H: "e2 ~ e2@6 c2 ~ c2@6", I: "e1 ~ e1@5 ~ e1 ~ e1@6", J: "g2 ~ g2@6 g1 ~ g1@4 b1@2",
  K: "c2 ~ c2 ~@3 c2@5 ~ c2@3 ~", L: "c2@2 b1@2 a1@2 g1@6 g1@2 f#1 ~", M: "c2 ~ c2@2 ~@2 c2@5 ~ c2@3 ~",
  N: "e2 ~ e2@6 c2 ~ c2@5 ~", O: "c2@2 b1@2 a1@2 g1@5 ~ g1@2 f#1 ~", P: "[c2@2 b1@2 a1@2 g1@27 ~@15]/3",
})).s("gm_electric_bass_finger").gain(0.37)

// chords · electric guitar clean · "r guitar"
const electric_guitar_clean = note(`<
  ~ A ~ A ~@7 A ~@7 B C ~ D E C ~ D ~@6 A ~@7 B C ~ D E C ~ D ~@6 A ~ A ~ A ~ B C ~ F ~@2
>`.pickRestart({
  A: "[g3,b3]", B: "g3", C: "b3@13 ~@3", D: "[g3,g4] ~@15", E: "g3@3 ~",
  F: "[c3,g3,c4,e4,g4] ~ [c3,g3,c4,e4,g4] ~@3 b3@8 ~@2", // C
})).s("gm_electric_guitar_clean").gain(0.35).pan(0)

// chords · acoustic guitar steel · "l guitar"
const acoustic_guitar_steel = note(`<
  ~@13 A B C D E@3 ~ F G H ~ F G ~@8 A B C D E@3 ~ F G H ~ F G ~@12 H ~ I J@3
>`.pickRestart({
  A: "[b4,e5,g5]@2 e5!2, ~ [c5,g5]", B: "c5@3 g4@5", C: "[b4,d5,g5] [c5,e5,g5]",
  D: "~@2 d5 g5@3 f#5@2, a5@3 ~@5, ~ f#5@2 ~@5", E: "[e5@8 e5@12 ~@2 g4@7 ~ [d5,d6]@17 ~]/3",
  F: "[g5,c6,e6] ~ [g5,c6,e6] ~@3 [g5,c6]@10", G: "~@6 [d5,g5]@6 d5@2 c5 ~", H: "[d5,d6]@15 ~", I: "~@6 [c5,e5,g5]@9 ~",
  J: "[[c5,e5,g5] ~ [c5,e5,g5] ~@3 [b4,d5,g5]@27 ~@15]/3", // C G
})).s("gm_acoustic_guitar_steel").gain(0.4).pan(0)

// drums · kick
const kick = s("bd").struct("<~ A@12 B@6 A@2 C A@3 C A@9 B@6 A@2 C A@3 C A@7 B@8 C D ~@2>".pickRestart({
  A: "x!2 ~@2 x!2 ~@2", B: "x ~@3 x!2 ~@2", C: "x!2 ~ x ~ x ~@2", D: "x!4 ~@4",
})).gain(0.5)

// drums · snare
const snare = s("sd").struct("<~ A@3 B A@7 C A@7 B A D A B A D A@7 C A@7 B A D A B A D A@15 E ~@2>".pickRestart({
  A: "~ x ~ x", B: "~@4 x ~@7 x ~ x!2", C: "~@4 x ~@5 x ~ x ~ x!2", D: "~@4 x ~@7 x ~@2 x", E: "~ x ~@2",
})).gain(0.5)

// drums · snare · soft notes
const snare_soft = s("sd").struct("<~@22 A ~@3 A ~@17 A ~@3 A ~@15 B ~@2>".pickRestart({
  A: "~@5 x ~ x", B: "~ x ~@6",
})).gain(0.15)

// drums · hihat
const hihat = s("hh").struct("<A@13 B@6 A@2 C A@3 C A@9 B@6 A@2 C A@3 C A@7 B@8 C D ~@2>".pickRestart({
  A: "x!4", B: "x ~ x!3 ~ x!2", C: "x ~ x!2", D: "x!2 ~@2",
})).gain(0.5)

// drums · hihat · soft notes
const hihat_soft = s("hh").struct(`<
  ~ A B A B A B A B A B A B C@6 A B A B A B A B A B A B A B A B C@6 A B A B A B A B A B A B A B C@8 A D ~@2
>`.pickRestart({
  A: "~ x ~ x ~ x ~ x", B: "~ x ~ x ~ x ~@2", C: "~@2 x ~@4 x ~@2 x ~@4 x", D: "~ x ~@6",
})).gain(0.15)

// drums · open hat
const open_hat = s("oh").struct(`<
  ~@2 A ~ A ~ A ~ A ~ A ~ A ~@7 A B A ~ A B A ~ A ~ A ~ A ~ A ~@7 A B A ~ A B A ~ A ~ A ~ A ~@8 B ~@3
>`.pickRestart({
  A: "~@7 x", B: "~ x ~@2",
})).gain(0.5)

// drums · crash
const crash = s("cr").struct("<~@21 A ~@3 A ~@17 A ~@3 A ~@15 A@2 ~@2>".pickRestart({
  A: "~@3 x ~@4",
})).gain(0.5)

stack(
  electric_guitar_jazz, bass, electric_guitar_clean, acoustic_guitar_steel, kick, snare, snare_soft, hihat, hihat_soft,
  open_hat, crash
)