// Promises — Eric Clapton
// 155 bpm, 4/4, key G major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(155/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<G [G@3 D] G [G@3 D]>"],
  // verse (10 bars)
  [10, "<G [G@3 D] C!2 G [G@3 C] D [D@2 G@2] G [G@2 ~@2]>"],
  // verse (10 bars)
  [10, "<G!2 C!2 G!2 D [D@2 G@2] G [G@2 ~@2]>"],
  // chorus (10 bars)
  [10, "<C Bm D!2 C Bm D [D@2 G@2] G [G@2 ~@2]>"],
  // verse (10 bars)
  [10, "<G!2 C!2 G!2 D [D@2 G@2] G [G@2 ~@2]>"],
  // bridge (16 bars)
  [16, "<C!2 G!2 Am7!2 G!2 C!2 G!2 Am7!2 G!2>"],
  // chorus (10 bars)
  [10, "<C Bm D!2 C Bm D [D@2 G@2] G [G@2 ~@2]>"],
  // verse (10 bars)
  [10, "<G!2 C!2 G!2 D [D@2 G@2] G [G@2 ~@2]>"],
  // bridge (16 bars)
  [16, "<C!2 G!2 Am7!2 G!2 C!2 G!2 Am7!2 G!2>"],
  // chorus (8 bars)
  [8, "<C Bm D!2 C Bm D!2>"],
  // chorus (4 bars)
  [4, "<C Bm D!2>"],
  // fadeout (10 bars)
  [10, "<C Bm D!2 C Bm D!2 C Bm>"],
)
const bassline = arrange(
  [4, "<g2!4>"],
  [10, "<g2 [g2@3 d2] c2!2 g2!2 d2 [f#2@2 g2@2] g2 [g2@2 ~@2]>"],
  [10, "<g2!2 c2!2 g2!2 d2 [f#2@2 g2@2] g2 [g2@2 ~@2]>"],
  [10, "<c2 b2 d2!2 c2 b2 d2 [f#2@2 g2@2] g2 [g2@2 ~@2]>"],
  [10, "<g2!2 c2!2 g2!2 d2 [f#2@2 g2@2] g2 [g2@2 ~@2]>"],
  [16, "<c2!2 b2!2 a2!2 g2!2 c2!2 b2!2 a2!2 g2!2>"],
  [10, "<c2 b2 d2!2 c2 b2 d2 [f#2@2 g2@2] g2 [g2@2 ~@2]>"],
  [10, "<g2!2 c2!2 g2!2 d2 [f#2@2 g2@2] g2 [g2@2 ~@2]>"],
  [16, "<c2!2 b2!2 a2!2 g2!2 c2!2 b2!2 a2!2 g2!2>"],
  [8, "<c2 b2 d2!2 c2 b2 d2!2>"],
  [4, "<c2 b2 d2!2>"],
  [10, "<c2 b2 d2!2 c2 b2 d2!2 c2 b2>"],
)

// 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)