// You've Got A Friend — Roberta Flack,Donny Hathaway
// 84 bpm, 4/4, key Ab major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(84/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<Ab Db Ab [Gm7b5@2 C7@2]>"],
  // verse (8 bars)
  [8, "<Fm C7 [Fm@2 C7@2] [Fm C7 Fm@2] Bbm7 Eb7 Ab!2>"],
  // pre-chorus (8 bars)
  [8, "<Gm7b5 C7 [Fm@2 C7@2] [Fm C7 Fm@2] Bbm7 Cm7 Eb11 Eb>"],
  // chorus (15 bars)
  [15, "<Ab Ab7 Db!2 Ab!2 Eb7!2 Ab Ab^7 Db [Gb Db@3] [Db^7@2 Cm7@2] Bbm7 Ab>"],
  // bridge (10 bars)
  [10, "<Gbadd9 Db Ab!2 Db Gb7 Fm7 Bbm7 Eb11 Eb>"],
  // chorus (14 bars)
  [14, "<Ab Ab7 Db!2 Ab!2 Eb7!2 Ab Ab^7 Db [Gb Db@3] [Db^7@2 Cm7@2] Bbm7>"],
  // outro (8 bars)
  [8, "<Ab Db Ab Db Ab Db Ab Db>"],
  // fadeout (4 bars)
  [4, "<Ab Db Ab Db>"],
)
const bassline = arrange(
  [4, "<ab2!3 [g2@2 c2@2]>"],
  [8, "<f2 [g2@2 c2@2] [f2@2 g2@2] [ab2 g2 f2@2] bb2 eb2 ab2!2>"],
  [8, "<g2 c2 [f2@2 g2@2] [ab2 g2 f2@2] bb2 c2 eb2!2>"],
  [15, "<ab2!2 db2!2 ab2!2 eb2!2 ab2!2 db2 [gb2 db2@3] [db2@2 c2@2] bb2 ab2>"],
  [10, "<gb2 db2 ab2!2 db2 gb2 f2 bb2 eb2!2>"],
  [14, "<ab2!2 db2!2 ab2!2 eb2!2 ab2!2 db2 [gb2 db2@3] [db2@2 c2@2] bb2>"],
  [8, "<ab2!8>"],
  [4, "<ab2!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)