// Goin' Back — The Byrds
// 116 bpm, 4/4, key E major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(116/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<E!4>"],
  // verse (12 bars)
  [12, "<E!2 D6!2 E!4 D6!2 E!2>"],
  // chorus (16 bars)
  [16, "<C#m!2 G#m!2 C#m!2 E!2 A Bsus E!2 A Bsus E!2>"],
  // verse (12 bars)
  [12, "<E!2 D6!2 E!4 D6!2 E!2>"],
  // chorus (16 bars)
  [16, "<C#m!2 G#m!2 C#m!2 E!2 A Bsus E!2 A Bsus E!2>"],
  // interlude (8 bars)
  [8, "<Asus Bsus E!2 Asus Bsus E!2>"],
  // chorus (16 bars)
  [16, "<C#m!2 G#m!2 C#m!2 E!2 A Bsus E!2 A Bsus!3>"],
  // outro (12 bars)
  [12, "<Asus Bsus E!2 Asus Bsus E!2 C#m!2 G#m!2>"],
  // fadeout (4 bars)
  [4, "<C#m!2 E!2>"],
)
const bassline = arrange(
  [4, "<e2!4>"],
  [12, "<e2!12>"],
  [16, "<c#2!2 g#2!2 c#2!2 e2!2 a2 b2 e2!2 a2 b2 e2!2>"],
  [12, "<e2!12>"],
  [16, "<c#2!2 g#2!2 c#2!2 e2!2 a2 b2 e2!2 a2 b2 e2!2>"],
  [8, "<a2 b2 e2!2 a2 b2 e2!2>"],
  [16, "<c#2!2 g#2!2 c#2!2 e2!2 a2 b2 e2!2 a2 b2!3>"],
  [12, "<a2 b2 e2!2 a2 b2 e2!2 c#2!2 g#2!2>"],
  [4, "<c#2!2 e2!2>"],
)

// chords · gm_piano
const keys = chord(chords).voicing().s("gm_piano").gain(0.8)
// bass · gm_electric_bass_finger
const bass = note(bassline).s("gm_electric_bass_finger").gain(0.9)
// drums
const drums = s("[bd hh] [sd hh] [bd hh] [sd hh]").gain(0.8)

stack(keys, bass, drums)