// Ferry Cross the Mersey — Gerry & The Pacemakers
// 102 bpm, 4/4, key B major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: pitch bends are ignored
// note: Full arrangement: all 62 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
setcpm(102/4)

// 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, A@4 for four bars: edit a riff to change every repeat.

// chords · acoustic guitar nylon · "NYLON GTR"
const acoustic_guitar_nylon = note(`<
  ~@2 A B A C A B A C A B A B D E F G H I A B A C A B A B D E F G H I J K J K J L M N A B A C A B A B D E F G A B A C A
  C O ~
>`.pickRestart({
  A: "e3@3 [b3,e4,g#4] [a3,d4,f#4]@2 b4@2", B: "e3@2 ~ [b3,e4,g#4] [a3,d4,f#4]@2 b4@2",
  C: "e3@2 ~ [b3,e4,g#4] [d4,f#4]@2 b4@2, ~@4 a3@3 ~", D: "[g#3,b3,e4]@5 ~ [g#3,b3,e4]@5 ~ [g#3,e4]@4, ~@6 b3 ~",
  E: "[g#3,b3,d#4]@2 ~ [g#3,b3,d#4]@2 ~ [g#3,b3,d#4]@2", F: "[f#3,a3,c#4]@2 ~ [f#3,a3,c#4]@2 ~ [f#3,a3,c#4]@2",
  G: "[f#3,b3,d#4]@2 ~ [f#3,b3,d#4]@2 ~ [f#3,b3,d#4]@2", H: "e3@6 [b3,e4,g#4] ~ [b3,d4,f#4]@2 ~@2 [d4,f#4,b4]@4",
  I: "e3@5 ~ [b3,e4,g#4] ~ [b3,d4,f#4]@3 ~ [d4,f#4,b4]@4", J: "[f#3,a3,c#4]!4 [f#3,b3,d#4]!4", K: "[g#3,b3,e4]!8",
  L: "[g#3,b3,d#4]!4 [g#3,b3,e4]!4", M: "[f#3,a3,c#4]!5 [a3,c#4] [f#3,a3,c#4]!2", N: "[f#3,b3,d#4]!6 [f#3,b3,d#4]@2",
  O: "[e3,b3], [e4,g#4]@7 ~", // E5 E
})).s("gm_acoustic_guitar_nylon").gain(0.27).pan(0.8)

// bass · fretless bass · "FRETLESS"
const bass = note("<~ A B@12 C D E F B@10 C D E F B@2 G H G H I J K L B@8 C D E F B@6 M ~>".pickRestart({
  A: "~@3 b2", B: "e2@3 c#3 b2@2 b1@2", C: "e2@2 ~ e2 b1 e2 f#2 g2", D: "g#2@5 ~ g#2@2 d#2@4 g#2@2 g2@2",
  E: "f#2@5 ~ f#2@2 c#2@3 ~ f#2@4", F: "b1@4 ~@2 b1@2 f#2@4 b1@3 ~", G: "f#2@2 ~ f#2 b2@2 ~ b2",
  H: "e2@2 ~ e2 b1@2 e2 f2", I: "f#2@3 ~@3 f#2@2 b2@2 ~@2 b2@2 a2@2", J: "g#2@3 ~@3 g#2@2 e2@4 g#2@4",
  K: "f#2@2 ~ f#2 c#2@2 f#2@2", L: "b2 ~ b2@2 a2 ~ a2@2 g#2 ~ g#2@2 f#2 ~ f#2@2", M: "e2",
})).s("gm_fretless_bass").gain(0.44)

// other · string ensemble 1 · "STRINGS"
const string_ensemble_1 = note("<~@13 A B C D E@3 F ~@6 A B C D E@3 ~@8 F ~@6 A B C D G@3 ~@6>".pickRestart({
  A: "~@12 e5 [f#5,g#5] [a5,b5] [c#6,d#6]", B: "e6", C: "d#6", D: "c#6",
  E: "[~@16 b4@19 a4@2 g#4@3 f#4@3 d4@2 a3@3, b5@11 ~@5]/3", F: "g#3 ~", G: "[b5@11 ~@5]/3",
})).s("gm_string_ensemble_1").gain(0.33).pan(0.6)

// chords · string ensemble 1 · "STRINGS"
const string_ensemble_1_2 = note("<~@2 A@12 B@2 C@2 D@2 A@8 B@2 C@2 D@2 ~@8 A@8 B@2 C@2 A@4 E F G ~>".pickRestart({
  A: "[[e4,g#4] [d4,f#4] [e4,g#4] [d4,f#4,a4] [e4,g#4] [d4,f#4] [e4,g#4] [d4,f#4,a4], b3]/4", B: "[e5 d#5, [g#4,b4]]/2",
  C: "[[a4,c#5] [b4,d#5], f#4]/2", D: "[[e4,g#4] [d4,f#4] [e4,g#4] [d4,f#4], b3]/2", E: "[e4,g#4] [d4,f#4]",
  F: "[e4,g#4] [d4,f#4,a4]", G: "[e4,g#4]",
})).s("gm_string_ensemble_1").gain(0.33)

// chords · tremolo strings · "TREMOLOSTR"
const tremolo_strings = note("<~@34 A@4 B@4 ~@14 C D E F G ~>".pickRestart({
  A: "[[a3,c#4] d#4 [g#3,e4]@2, f#3 ~, ~ b3@3]/2", // A C#m
  B: "[[a3,c#4] ~@3 [a3,c#4]@2 [b3,d#4]@2, f#3 g#3 f#3@2, ~ b3@3 ~@4, ~ d#4@2 e4@3 ~@2]/4", C: "[e4,g#4] [f#4,a4]",
  D: "[g#4,b4] [a4,c#5]", E: "[b4,d5] [a4,c#5]", F: "[g#4,b4] [f#4,a4]", G: "[e4,g#4]",
})).s("gm_tremolo_strings").gain(0.3).pan(0.6)

// other · flute
const flute = note("<~@20 A@3 B C@3 D ~@14 A@3 B C@3 D ~@5 E F@2 ~ G H ~>".pickRestart({
  A: "[~@7 [g#5,a5] b5@26 ~ a5@2 g#5@3 f#5@3 e5@2 d5@3, ~@8 a#5 ~@39]/3", B: "e5@3 f#5@2 d5@3 b4@3 c#5@2 d5@3",
  C: "[b4@4 ~@3 [g#5,a5] b5@25 ~@2 a5@2 g#5@3 f#5@3 e5@2 d5@3, ~@8 a#5 ~@39]/3", D: "e5@3 f#5@2 d5@3 b4@8",
  E: "~@3 b3 d4@3 c#4", F: "b3/2", G: "~@3 b4 d5@3 c#5", H: "b4",
})).s("gm_flute").gain(0.28).pan(0.6)

// other · french horn · "FR.HORN"
const french_horn = note("<~@20 A@3 B C@3 D ~@14 A@3 B C@3 D ~@5 E F@4 G ~>".pickRestart({
  A: "[~@8 b4@26 a4@3 g#4@3 f#4@3 e4@2 d4@3]/3", B: "e4@3 f#4@2 d4@3 b3@3 c#4@2 d4@3",
  C: "[b3@8 b4@26 a4@3 g#4@3 f#4@3 e4@2 d4@3]/3", D: "e4@3 f#4@2 d4@3 b3@7 ~", E: "~@3 b3 d4@3 c#4",
  F: "[b3@26 ~ b3 d4@3 c#4]/4", G: "b3",
})).s("gm_french_horn").gain(0.38).pan(0.3)

// other · melodic tom · "MELO TOM 1"
const melodic_tom = note(`<
  [e2 ~ e2 e3!2 ~ e3 ~ e2 e3 e2 ~ e3 ~ e3 ~]!14
  ~@6
  [e2 ~ e2 e3!2 ~ e3 ~ e2 e3 e2 ~ e3 ~ e3 ~]!12
  ~@10
  [e2 ~ e2 e3!2 ~ e3 ~ e2 e3 e2 ~ e3 ~ e3 ~]!18
  [e2 ~@15]
  ~
>`).s("gm_melodic_tom").gain(0.28)

// drums · kick
const kick = s("bd").struct("<~@14 [x!2]!40 ~@8>").gain(0.38)

// drums · rim
const rim = s("rim").struct(`<
  ~@14
  [~@2 x!2 ~@2 x ~]!6
  [~@2 x ~@3 x!2]
  [~@2 x!2 ~@2 x ~]!21
  [~@2 x ~@3 x!2]
  [~@2 x!2 ~@2 x ~]!11
  ~@8
>`).gain(0.44)

// drums · snare
const snare = s("sd").struct("<~@27 [~@12 x!4] ~@21 [~@12 x!4] ~@12>").gain(0.49)

// drums · ride
const ride = s("rd").struct("<~@14 A@7 B A@5 C A@15 B A@5 C A@4 ~@8>".pickRestart({
  A: "x!8", B: "x ~ x!6", C: "x!6 ~@2",
})).gain(0.38)

// drums · congas
const congas = s("conga:13").struct("<[x!8]!60 x ~>").gain(1.22)

stack(
  acoustic_guitar_nylon, bass, string_ensemble_1, string_ensemble_1_2, tremolo_strings, flute, french_horn, melodic_tom,
  kick, rim, snare, ride, congas
)