let bpm b = cps (b/60)
let withmod a b c d = (whenmod a b . within (c, d))
let every' n o f = when ((== (o-1)) . (`mod` n)) f

let modtempo s e = (# nudge (scale 0 s $ fmap (**e) saw1))
let mt s d i = slow s . modtempo 0.3 3 $ density d $ i

-- original bpm = 105
bpm 105

-- drum

d1 $ slow 8 $ n "[1*2, 0*8]" # s "drum"
d1 $ slow 8 $ n "[1*2, 0 0 0 [0 ~! 0] ! 0 [0 0/4] 0]" # s "drum"

d1 $ mt 16 2 $ n "[1*2, 0 0 0 [0 ~! 0] ! 0 [0 0/4] 0]" # s "drum"

d2 $ n "[[~ 0] [[2!! ~]/4 0]]/2" # s "kit"

d2 $
  withmod 11 5 0.5 1 (density 2) $
  n "[[~ 0] [[2!! ~]/4 0]]/2" # s "kit"

d2 $
  whenmod 3 2 (density 2) $
  withmod 11 5 0.5 1 (density 2) $
  n "[[~ 0] [[2!! ~]/4 0]]/2" # s "kit"

d2 $
  whenmod 3 2 (density 2) $
  withmod 11 5 0.5 1 (density 2) $
  n "[[~ 0] [[2!! ~]/4 0]]/2" # s "kit"

d2 $
  every' 16 8 (const $ s "kit:3") $
  whenmod 3 2 (density 2) $
  withmod 11 5 0.5 1 (density 2) $
  n "[[~ 0] [[2!! ~]/4 0]]/2" # s "kit"

-- icarus

d3 $ slow 16 . striate 256 $ s "icarus"

d3 $
  every' 2 2 (within (0, 0.75) (iter 16)) $
  slow 16 . striate 256 $ s "icarus"

{-
d3 $
  slow 8 $ smash 64 [0.5,0.75] $
  s "icarus"
-}

-- nimble

d4 $ slow 16 $ striate 16 $ n "[0 1]/2" # s "nimble"

d4 $ superimpose (iter 4) $
  slow 16 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 $
  superimpose (
    iter 4 .
    (# speed ((+0.8).(/1.5) <$> slow 2.5 sine1))
    ) $
  slow 16 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 $
  superimpose (
    iter 4 .
    (# speed ((+0.8).(/1.5) <$> slow 2.5 sine1)) .
    (# nudge "0")
    ) $
  mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

d3 silence
d4 $ mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 $ whenmod 5 3 rev $
  mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 $
  superimpose (
    iter 4 .
    (# speed ((+0.8).(/1.5) <$> slow 2.5 sine1)) .
    (# nudge "0")
    ) $
  whenmod 5 3 rev $
  mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 $
  every' 2 2 (within (0, 0.5) (const silence)) $
  superimpose (
    iter 4 .
    (# speed ((+0.8).(/1.5) <$> slow 2.5 sine1)) .
    (# nudge "0")
    ) $
  whenmod 5 3 rev $
  mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 $
  every' 2 2 (within (0.25, 0.5) (const silence)) $
  superimpose (
    iter 4 .
    (# speed ((+0.8).(/1.5) <$> slow 2.5 sine1)) .
    (# nudge "0")
    ) $
  whenmod 5 3 rev $
  mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

-- something of a structure starting to come together here

d1 $ slow 8 $ n "[1*2, 0 0 0 [0 ~! 0] ! 0 [0 0/4] 0]" # s "drum"

d1 $
  (whenmod 5 3 . every' 7 5) (0.5 ~>) $
  slow 8 $ n "[1*2, 0 0 0 [0 ~! 0] ! 0 [0 0/4] 0]" # s "drum"

d1 $
  (whenmod 5 3 . every' 7 5) (0.5 ~>) $
  mt 16 2 $ n "[1*2, 0 0 0 [0 ~! 0] ! 0 [0 0/4] 0]" # s "drum"

d3 $
  every' 2 2 (within (0, 0.75) (iter 16)) $
  slow 16 . striate 256 $ s "icarus"

d4 $
  every' 2 2 (within (0.25, 0.5) (const silence)) $
  whenmod 5 3 rev $
  mt 16 1 $ striate 256 $ n "[0 1]/2" # s "nimble"

d4 silence
hush