// Going To Chicago Blues — Count Basie
// 74 bpm, 4/4, key Eb major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(74/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<~!2 [F9@2 B7@2] [Bb7@2 Bb7#5@2]>"],
  // verse (12 bars)
  [12, "<Eb [Ab7@2 Ao@2] Eb Eb7 Ab7!2 Eb!2 [Fm7@2 B7@2] Bb7 [Eb@2 Ab7@2] Eb>"],
  // verse (12 bars)
  [12, "<Eb Ab7 Eb!2 Ab7!2 Eb!2 Fm7 Bb7 [Eb@2 Ab7 Ao] [Eb@2 Bb7@2]>"],
  // verse (12 bars)
  [12, "<Eb7 Ab Eb7!2 Ab7!2 Eb7!2 Bb7!2 [Eb@2 Ab7 Ao] Bb7>"],
  // verse (12 bars)
  [12, "<Eb7 Ab7 Eb7!2 Ab7!2 Eb7!2 Bb7!2 [Eb@2 Ab7 Ao] [Eb@2 Bb7@2]>"],
  // verse (12 bars)
  [12, "<Eb7!4 Ab7!2 Eb7!2 [F7sus@2 Bb7@2]!2 [Eb@2 Ab7 Ao] [Eb@2 Bb7@2]>"],
  // verse (12 bars)
  [12, "<Eb7!4 Ab7!2 Eb7!2 [F7sus@2 Bb7@2]!2 [Eb@2 Ab7 Ao] [Eb Bb7 Eb@2]>"],
  // ending (1 bars)
  [1, "<[Eb6@2 Eb@2]>"],
)
const bassline = arrange(
  [4, "<~!2 [f2@2 b2@2] bb2>"],
  [12, "<eb2 [ab2@2 a2@2] eb2!2 ab2!2 eb2!2 [f2@2 b2@2] bb2 [eb2@2 ab2@2] eb2>"],
  [12, "<eb2 ab2 eb2!2 ab2!2 eb2!2 f2 bb2 [eb2@2 ab2 a2] [eb2@2 bb2@2]>"],
  [12, "<eb2 ab2 eb2!2 ab2!2 eb2!2 bb2!2 [eb2@2 ab2 a2] bb2>"],
  [12, "<eb2 ab2 eb2!2 ab2!2 eb2!2 bb2!2 [eb2@2 ab2 a2] [eb2@2 bb2@2]>"],
  [12, "<eb2!4 ab2!2 eb2!2 [f2@2 bb2@2]!2 [eb2@2 ab2 a2] [eb2@2 bb2@2]>"],
  [12, "<eb2!4 ab2!2 eb2!2 [f2@2 bb2@2]!2 [eb2@2 ab2 a2] [eb2 bb2 eb2@2]>"],
  [1, "<[bb2@2 eb2@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)