// Ramble On — Led Zeppelin
// 100 bpm, 4/4, key E major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: ch 4 "Synth Flute" named as a pipe, played on flute (its lead 6 voice patch is not one)
// note: Full arrangement: all 105 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
// note: Guitar parts that double another keep only their own notes (fills, solos): Elec. Guitar.
setcpm(100/4)

// 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.

// chords · acoustic guitar nylon · "Acoust. Guitar"
const acoustic_guitar_nylon = note(`<
  A B A B A B A B A B A B A B A B A B A B A B A B C D C D E F E F E F E F A B A B A B A B A B A B A B A B E F E F E F E
  F G H G H A B A B A B A B A B A B A B A B C D C D E F E F E F E F E F E F E F E F E F E F I
>`.pickRestart({
  A: "[e3,b3,e4,g#4]@2 [e3,b3,e4,g#4]!2 [e3,b3,e4,g#4]@2 [e2,a3,d4,f#4]!4 [e2,e3,a3,b3,c#4,e4]!4 [e2,a2,d3,g3,b3,e4]!2", // E D A Em7
  B: "[a2,a3,c#4,e4]@2 [a2,a3,c#4,e4]!2 [a2,a3,d4,e4]!6 [a2,a3,c#4,e4]!4 [e2,b2,e3,g#3,b3,e4]!2", // A Asus4 A E
  C: "[e2,b2,e3,g#3,b3,e4]@2 [e2,b2,e3,g#3,b3,e4]!4 [e2,c#3,f#3,a3,b3,e4]@2 e2@2 [e2,a3,b3,d4,e4,f#4]@2 [e2,a3,b3,d4,e4,f#4]!2 [e2,a3,b3,d4,e4,f#4]@2", // E F#m7 Bm7
  D: "[a2,a3,c#4,e4]@2 [a2,a3,c#4,e4]!2 [a2,a3,c#4,e4]@2 [e2,e3,a3,b3,c#4,e4]@2 [e2,e3,a3,b3,c#4,e4]!2 [e2,b2,e3,g#3,b3,e4]@2 [e2,b2,e3,g#3,b3,e4]!2 [e2,b2,e3,g#3,b3,e4]@2", // A E
  E: "[e2,b2,e3,g#3,b3,e4]@2 [e2,b2,e3,g#3,b3,e4]!2 [e2,b2,e3,g#3,b3,e4]@2 [e2,b2,e3,g#3,b3,e4]@2 ~@8", // E
  F: "[a2,a3,c#4,e4]@2 [a2,a3,c#4,e4]!2 [a2,g3,b3,d4,e4]@2 [a2,g3,b3,d4,e4]!2 [a2,g3,b3,d4,e4]@2 [a2,g3,b3,d4,e4]!2 [a2,g3,b3,d4,e4]@2 [a2,g3,b3,d4,e4]!2", // A Em7
  G: "c#5 b4 a4 f#4 e4@2 c#5 b4 a4 f#4 e4@2 c#5 b4 a4@2", H: "c#5 b4 a4 f#4 e4@2 a4@3 e4 a4@3 e4 a4@2",
  I: "[e2,b2,e3,g#3,b3,e4]@2 [e2,b2,e3,g#3,b3,e4]!2 [e2,b2,e3,g#3,b3,e4]@2 [e2,b2,e3,g#3,b3,e4] ~@9", // E
})).s("gm_acoustic_guitar_nylon").gain(0.4)

// bass · acoustic bass · "Bass Guitar"
const bass = note(`<
  ~@4 A B C D A E C D A E C D A E C D A E C D F G H I J K L M N K O P A E C D A E C D A Q R@2 A Q R@2 S T U K S T U K V
  W X Y Z AA AB@2 A B AB@2 A AC AD@2 A E AE@2 F AF H AG AH K U K U K U K AI AJ AK AL AM AN AO AP AQ AR AS@2 AT
>`.pickRestart({
  A: "e2@2 ~ b2@5", B: "a2@4 ~@2 e3 f#3@3 e3@6", C: "e2@2 ~ g#3 ~ f#3 ~ e3",
  D: "~@2 c#3@2 ~@2 b2@2 ~@2 a2 b2 c#3 e3 c#3@2", E: "a2@4 ~@2 e3 f#3@3 e3@4 c#3@2", F: "e1@2 ~ f#1 ~ g#1@3",
  G: "a1@4 ~@2 c#2@2 ~@2 e2 e2@2 c#2 b1@2", H: "e1@2 ~ f#1 ~ g#1@2 g#1", I: "a1@2 c#2@2 ~@2 d2@2 ~@2 e2@2 e2 c#2 b1@2",
  J: "e1@4 a2@2 e3@3 e1@2 f#1@2 g#1@2 g#1", K: "a2!4 e3 a2!2 d3@2 a2 d3 a2!3 d3 e3",
  L: "e2@4 b2@2 e2@3 e1@2 f#1@2 g#1@2 e2", M: "a2!4 e3 a2!3 d3 a2!3 d3 a2 ~ e3",
  N: "e2@3 e2 e3@2 e2@3 e1@2 f#1@2 g#1@2 e2", O: "e2@3 b2 e3@2 e2@3 e1@2 f#1@2 g#1@2 e2",
  P: "a2!4 e3 a2!2 d3@2 a2 d3!3 e3@2 b2", Q: "a2@4 ~@2 e3 f#3@3 e3@2 c#3 e3 b2@2",
  R: "[e2@4 ~@2 f#3 g#3@3 f#3@2 ~@2 e3@4 c#3@2 ~@2 b2@2 ~@2 a2 b2 c#3 e3 c#3@2]/2",
  S: "e2@2 e2@2 e3@2 e3@3 e1@2 f#1@2 g#1@2 e2", T: "a2!4 e3 a2!2 d3@2 a2 d3 a2@2 a2 d3 e3",
  U: "e2@3 e2 b2@2 e2@3 e1@2 f#1@2 g#1@2 e2", V: "a2@4 a2@2 a2@4 a2@2 e2@3 e2",
  W: "a1@2 g2 a2@2 a2 d3@2 ~ e3 d3 ~@2 e3 g2 a2", X: "a2@3 a2 a2@2 a2@3 a2!3 d2 e2 d2 e2",
  Y: "a2@3 a2 a2@2 a2@4 a2@3 d3 e3@2", Z: "e2@2 e3 b2@5", AA: "a2@2 ~ f#3@2 e3@3",
  AB: "[e2@4 ~@2 g#3@4 f#3@2 ~@2 e3@4 c#3@2 ~@2 b2@2 ~@2 a2 b2 c#3 e3 c#3@2]/2", AC: "a2@4 ~@2 e3 f#3@5 e3@4",
  AD: "[e2@4 ~@2 g#3@4 f#3@2 ~@2 e3@4 c#3@4 b2@4 a2 b2 c#3 e3 c#3@2]/2",
  AE: "[e2@4 ~@2 g#3@4 f#3@2 ~@2 e3@4 c#3@4 b2@2 b2@2 a2 b2 c#3 e3 c#3@2]/2",
  AF: "a1@2 c#2@2 ~@2 d2@2 ~@2 e2@3 c#2 b1@2", AG: "a1@2 c#2@2 ~@2 d2@2 ~@2 e2 e2@2 c#2 b1@2",
  AH: "e1@4 e2@2 e1@3 f#1@2 g#1@2 b1@2 e2", AI: "e2@3 e2 e3@2 e2@3 e1@2 f#1@2 g#1@2 g#1",
  AJ: "a1!4 e2 a1!2 a1@2 d2 a1!3 c#2@3", AK: "e1@3 e1 e2@2 e1@3 f#1@2 g#1@2 b1@2 e2",
  AL: "a2!4 e3 a2!2 d3@2 d3!2 e3 ~ e3@3", AM: "e2!3 e2@2 b2 e3@2 ~ e2@2 g#2@2 b2@2 b2",
  AN: "a2 e2 a1@2 c#2!2 e2 e2@3 g2 g#2 a2 c#2 d2 d#2", AO: "e2 e2@2 e2 e3@2 e2 e2@2 e1!2 g#1@2 b1@2 b1",
  AP: "a1!10 d2!4 d#2 e2", AQ: "e2@3 e2 e3@2 e2 e2@2 e1@2 g#1@2 b1@2 e2", AR: "a2!4 e3 a2!3 g2 d3 g2!2 f#2 c#3 f#2 e2",
  AS: "[e2@3 e2 b1@2 e1 e1@2 e1@2 e1@2 f#1@2 g#1@2 a1 c#2 d2!2 e2@2 d2 g2 g#2 a2 a2@2 c#2 d2 d#2]/2",
  AT: "e2@2 e3!2 b2@2 e3@10",
})).s("gm_acoustic_bass").gain(0.32)

// chords · electric guitar clean · "Elec. Guitar"
const electric_guitar_clean = note(`<
  ~@24 A B A B C D C D C D C D ~@24 E F E F ~ G H G H G H G H G H G H G H G ~@25
>`.pickRestart({
  A: "~ f#4 ~@7 b3 ~ f#4 ~@4", B: "d4 c#4@2 b3@3 ~ b3@3 ~@2 a3 ~@3", C: "~ [e3,b3,e4,g#4] ~@2 [a3,d4,f#4]@2 ~@10",
  D: "[g3,d4] [a3,e4]@2 ~@2 [g3,d4]@2 ~@2 g3@3 ~@2 d#4@2", E: "e5 d5 c#5 b4 a4@2 e5 d5 c#5 b4 a4@2 e5 d5 c#5@2",
  F: "e5 d5 c#5 b4 a4@2 c#5@3 b4 c#5@3 b4 c#5@2", G: "b3 c#4@2 ~ c#4@2 ~ b3 ~@2 b3@2 g#3@2 a3@2",
  H: "f#3 g#3 ~@8 f#3 g#3@2 ~ g#3@2",
})).s("gm_electric_guitar_clean").gain(0.48)

// chords · flute · "Synth Flute"
const flute = note("<~@44 A@2 B@4 C ~@54>".pickRestart({
  A: "[[b4,d5]@18 [b4,d5] [a4,c#5] [b4,d5]@2 [b4,d5] [a4,c#5] [b4,d5]@2 [b4,d5] [a4,c#5] [b4,d5]@2 [c#5,e5]@2]/2", // Bm A Bm A Bm A Bm C#m
  B: "[[b4,d5] [a4,c#5] [b4,d5]@16 [b4,d5] [a4,c#5] [b4,d5]@2 [b4,d5] [a4,c#5] [b4,d5]@2 [b4,d5] [a4,c#5] [b4,d5]@2 [c#5,e5]@2]/2", // Bm A Bm A Bm A Bm A …
  C: "[b4,d5] [a4,c#5] [c#5,e5]@2 [b4,d5] ~@11", // Bm A C#m Bm
})).s("gm_flute").gain(0.4)

// drums · kick
const kick = s("bd").struct(`<
  ~@28 A B A B A B A C ~@16 A B A B A B A C D E@2 F ~@20 A B A B A B A B A B A B G@8 H
>`.pickRestart({
  A: "x ~@2 x ~ x ~@2 x ~ x ~@2 x ~ x", B: "~@3 x ~@3 x ~@3 x ~@4", C: "~@3 x ~@3 x ~@8",
  D: "x ~@2 x ~@2 x ~@3 x!2 ~ x ~@2", E: "x ~@2 x ~@2 x ~@3 x!2 ~@4", F: "x ~@2 x ~@4 x ~@7",
  G: "~@2 x!2 ~@2 x!2 ~@2 x!2 ~@2 x!2", H: "x ~@2 x ~@2 x ~@9",
})).gain(0.8)

// drums · snare
const snare = s("sd").struct(`<
  ~@27 A B C B C B C B D ~@15 A B C B C B C B D E@3 F ~@19 A B C B C B C B C B C B C@9 B
>`.pickRestart({
  A: "~@9 x!2 ~ x!3 ~", B: "~ x ~@2", C: "x!4", D: "x ~@3 x ~@3 x ~@3 x!3 ~", E: "~@4 x ~@4 x ~@2 x ~@3",
  F: "~@4 x ~@2 x ~ x ~@2 x!3 ~",
})).gain(0.8)

// drums · open hat
const open_hat = s("oh").struct("<~@28 A B@6 C ~@16 A B@6 C D B@2 C ~@20 A B@19 E>".pickRestart({
  A: "~@2 x!6", B: "x!8", C: "x!6 ~@2", D: "~ x!7", E: "~@2 x!2 ~@4",
})).gain(0.8)

// drums · crash
const crash = s("cr").struct("<~@28 A ~@23 A ~@7 A ~@3 A ~@19 A ~@19 A>".pickRestart({
  A: "x",
})).gain(0.8)

// drums · congas
const congas = s("conga:13").struct("<A@26 B C ~@8 A@15 D ~@12 A@19 D ~@21>".pickRestart({
  A: "x!16", B: "x!5 ~ x!10", C: "x!5 ~ x!2 ~@8", D: "x!8 ~@8",
})).gain(0.26)

stack(acoustic_guitar_nylon, bass, electric_guitar_clean, flute, kick, snare, open_hat, crash, congas)