// Gotta Serve Somebody — Bob Dylan
// 95 bpm, 4/4, key A minor. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(95/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<Am!4>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // verse (16 bars)
  [16, "<Am!8 D7!2 Am!2 E7 D7 Am!2>"],
  // coda (4 bars)
  [4, "<Am!4>"],
  // fadeout (7 bars)
  [7, "<Am!7>"],
)
const bassline = arrange(
  [4, "<a2!4>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [16, "<a2!8 d2!2 a2!2 e2 d2 a2!2>"],
  [4, "<a2!4>"],
  [7, "<a2!7>"],
)

// 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)