// Last Child — Aerosmith
// 82 bpm, 4/4, key Eb major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(82/4)

const chords = arrange(
  // intro (10 bars)
  [10, "<Dbmadd9!2 Gb6!2 Eb7!2 Eb7#9!4>"],
  // verse (18 bars)
  [18, "<Eb7#9!8 Ab7!4 Eb7#9!2 Db Ab Eb7#9!2>"],
  // verse (18 bars)
  [18, "<Eb7#9!8 Ab7!4 Eb7#9!2 Db Ab Eb7#9!2>"],
  // solo (12 bars)
  [12, "<Eb7#9!6 Db Ab Eb7#9!2 Db Ab>"],
  // outro (8 bars)
  [8, "<Eb7#9!8>"],
  // fadeout (4 bars)
  [4, "<Eb7#9!4>"],
)
const bassline = arrange(
  [10, "<db2!2 gb2!2 eb2!6>"],
  [18, "<eb2!8 ab2!4 eb2!2 db2 ab2 eb2!2>"],
  [18, "<eb2!8 ab2!4 eb2!2 db2 ab2 eb2!2>"],
  [12, "<eb2!6 db2 ab2 eb2!2 db2 ab2>"],
  [8, "<eb2!8>"],
  [4, "<eb2!4>"],
)

// 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)