// Mercy Mercy Me (The Ecology) — Marvin Gaye
// 93 bpm, 4/4, key E major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(93/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<Bb7sus!2 B7sus!2>"],
  // chorus (8 bars)
  [8, "<E^7!2 C#m7!2 F#m7!2 B7sus!2>"],
  // chorus (8 bars)
  [8, "<E^7!2 C#m7!2 F#m7!2 B7sus!2>"],
  // chorus (8 bars)
  [8, "<E^7!2 C#m7!2 F#m7!2 B7sus!2>"],
  // chorus (8 bars)
  [8, "<E^7!2 C#m7!2 F#m7!2 B7sus!2>"],
  // chorus (8 bars)
  [8, "<E^7!2 C#m7!2 F#m7!2 B7sus!2>"],
  // solo (8 bars)
  [8, "<F^7!2 Dm7!2 Gm7!2 C7sus!2>"],
  // fadeout (4 bars)
  [4, "<Fm7!2 Bm7!2>"],
)
const bassline = arrange(
  [4, "<bb2!2 b2!2>"],
  [8, "<e2!2 c#2!2 f#2!2 b2!2>"],
  [8, "<e2!2 c#2!2 f#2!2 b2!2>"],
  [8, "<e2!2 c#2!2 f#2!2 b2!2>"],
  [8, "<e2!2 c#2!2 f#2!2 b2!2>"],
  [8, "<e2!2 c#2!2 f#2!2 b2!2>"],
  [8, "<f2!2 d2!2 g2!2 c2!2>"],
  [4, "<f2!2 b2!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)