// Goodbye Yellow Brick Road — Elton John
// 61 bpm, 4/4, key F major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(61/4)

const chords = arrange(
  // intro (2 bars)
  [2, "<[F C Dm@2] [Bb C F@2]>"],
  // verse (8 bars)
  [8, "<[Gm7 Bb C@2] [F@2 Bb@2] [Eb@2 C7@2] F [Gm7 Bb C@2] [F@2 Bb@2] [Eb@2 C7@2] F>"],
  // chorus (3 bars)
  [3, "<[Bbm@2 Eb@2] [Ab@2 Db@2] [Bbm@2 C7@2]>"],
  // chorus (8 bars)
  [8, "<[F@2 A7@2] [Bb@2 F@2] [D7@2 Gm7@2] [C@2 F C] [Dm7@2 A7@2] [Bb@2 Db@2] [Db@2 F C] [Dm@2 Bb C]>"],
  // chorus (4 bars)
  [4, "<[Bbm@2 Eb@2] [Ab@2 Db@2] [Bbm@2 C7@2] F>"],
  // verse (8 bars)
  [8, "<[Gm7 Bb C@2] [F@2 Bb@2] [Eb@2 C7@2] F [Gm7 Bb C@2] [F@2 Bb@2] [Eb@2 C7@2] F>"],
  // chorus (3 bars)
  [3, "<[Bbm@2 Eb@2] [Ab@2 Db@2] [Bbm@2 C7@2]>"],
  // chorus (8 bars)
  [8, "<[F@2 A7@2] [Bb@2 F@2] [D7@2 Gm7@2] [C@2 F C] [Dm7@2 A7@2] [Bb@2 Db@2] [Db@2 F C] [Dm@2 Bb C]>"],
  // chorus (4 bars)
  [4, "<[Bbm@2 Eb@2] [Ab@2 Db@2] [Bbm@2 C7@2] F>"],
)
const bassline = arrange(
  [2, "<[f2 e2 d2 c2] [bb2 c2 f2@2]>"],
  [8, "<[g2 bb2 c2@2] [f2 a2 bb2@2] [eb2@2 e2@2] f2 [g2 bb2 c2@2] [f2 a2 bb2@2] [eb2@2 e2@2] f2>"],
  [3, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 c2@2]>"],
  [8, "<[f2@2 a2@2] [bb2@2 f2@2] [d2@2 g2@2] [c2@2 f2 e2] [d2@2 a2@2] [bb2@2 db2@2] [db2@2 f2 e2] [d2 c2 bb2 c2]>"],
  [4, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 c2@2] f2>"],
  [8, "<[g2 bb2 c2@2] [f2 a2 bb2@2] [eb2@2 e2@2] f2 [g2 bb2 c2@2] [f2 a2 bb2@2] [eb2@2 e2@2] f2>"],
  [3, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 c2@2]>"],
  [8, "<[f2@2 a2@2] [bb2@2 f2@2] [d2@2 g2@2] [c2@2 f2 e2] [d2@2 a2@2] [bb2@2 db2@2] [db2@2 f2 e2] [d2 c2 bb2 c2]>"],
  [4, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 c2@2] f2>"],
)

// 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)