// Do Your Thing — Isaac Hayes
// 76 bpm, 4/4, key F minor. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(76/4)

const chords = arrange(
  // intro (6 bars)
  [6, "<[Fm@2 Fm7@2]!6>"],
  // verse (12 bars)
  [12, "<[Fm@2 Fm7@2]!12>"],
  // chorus (6 bars)
  [6, "<Ab C7 [Fm@2 Fm7@2]!4>"],
  // verse (12 bars)
  [12, "<[Fm@2 Fm7@2]!12>"],
  // chorus (6 bars)
  [6, "<Ab C7 [Fm@2 Fm7@2]!4>"],
  // outro (21 bars)
  [21, "<[Fm@2 Fm7@2]!21>"],
)
const bassline = arrange(
  [6, "<[f2@2 c2@2]!6>"],
  [12, "<[f2@2 c2@2]!12>"],
  [6, "<ab2 a#2 [f2@2 c2@2]!4>"],
  [12, "<[f2@2 c2@2]!12>"],
  [6, "<ab2 a#2 [f2@2 c2@2]!4>"],
  [21, "<[f2@2 c2@2]!21>"],
)

// 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)