Home : Tune Toys : Expresso 
  Expresso takes a simple musical expression (literally "X") and mutates it. In each generation, transformations are applied to components of the expression. This is a fractal technique known as an L-system. The more generations there are, the larger and more complex the expression gets (and the longer it can take to compute). The output varies wildly, from boring to fascinating. Press "Mutate" a few times till you get something that looks interesting, then click on the image to play it. See Composer's Quarry for examples of output.

Transformations:
Seed:
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Generations:
Phrase for X:
# of Tracks:
Randomize patches:
 

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After 18 generations the expression "X" became this:
(transpose(transpose(transpose(transpose(shuffle(echo(echo(arpeggio(((step((step(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,-5) ,7) ) ,12) |transpose((X+X) ,-5) ) ,12) +(((X+transpose(X,4) ) +transpose((((transpose(X,-5) +X) +transpose(transpose(step(X,12) ,4) ,4) ) +transpose(((X+transpose(X,12) ) +transpose(transpose(X,-7) ,12) ) ,7) ) ,7) ) +transpose((echo(arpeggio((X+X) ) ,4,6) +transpose((X|X) ,12) ) ,7) ) ) +transpose((X+transpose(X,12) ) ,12) ) ) ,4,6) ,4,6) ) ,4) ,4) ,4) ,-7) +echo(((((arpeggio(transpose((shuffle(transpose(transpose(transpose((arpeggio(X) |(X+X) ) ,-5) ,-5) ,4) ) +transpose(transpose(((transpose((X+transpose(X,7) ) ,4) |(X+(X|X) ) ) |X) ,-5) ,12) ) ,4) ) |(((((step((transpose(X,4) +X) ,12) +transpose(((X+X) +transpose(X,-7) ) ,4) ) +transpose(transpose((X+X) ,-7) ,7) ) |echo(transpose(transpose(X,4) ,-7) ,4,6) ) |transpose(echo(transpose(X,4) ,4,6) ,-5) ) +transpose(transpose(shuffle((transpose(transpose(((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) ,4) +transpose(((step(transpose(X,-5) ,12) +transpose((transpose(transpose(X,-5) ,4) +transpose(X,-5) ) ,7) ) +transpose(X,12) ) ,12) ) ) ,4) ,7) ) ) +arpeggio((echo(((transpose(shuffle(X) ,4) +transpose(transpose(echo(X,4,6) ,-7) ,7) ) +(transpose(step(transpose(X,-5) ,12) ,4) +transpose(echo((X+transpose(X,12) ) ,4,6) ,7) ) ) ,4,6) +transpose(((((((X+transpose((X|X) ,12) ) +(transpose(X,-7) +(X|X) ) ) +transpose(transpose(X,-7) ,12) ) |transpose((transpose(((((transpose(X,-5) +X) +transpose(((X|X) |transpose(X,-5) ) ,4) ) +transpose(transpose(echo(X,4,6) ,-5) ,7) ) +transpose((transpose(X,4) +step(echo(X,4,6) ,12) ) ,7) ) ,-5) +transpose(echo(step((((transpose(X,4) |X) +((X+X) |(X+transpose(X,7) ) ) ) +X) ,12) ,4,6) ,12) ) ,4) ) +transpose(transpose(((X|shuffle(transpose(X,-5) ) ) |echo(transpose(X,-5) ,4,6) ) ,-5) ,4) ) +transpose(((((X+transpose(X,7) ) |shuffle((X+X) ) ) +(transpose(step(X,12) ,-7) |transpose(transpose(shuffle(X) ,-5) ,-7) ) ) +step((transpose(((transpose(X,4) +transpose((X|X) ,7) ) +transpose((X+transpose(X,12) ) ,12) ) ,-7) +transpose(echo(step(echo(X,4,6) ,12) ,4,6) ,12) ) ,12) ) ,7) ) ,12) ) ) ) +transpose((((transpose(step(transpose(transpose((transpose(X,4) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) ,-5) ,12) ,-7) |echo(transpose(step(echo(transpose(shuffle(arpeggio(X) ) ,-5) ,4,6) ,12) ,-7) ,4,6) ) +arpeggio(((shuffle(X) +transpose(transpose(step((((X+transpose(X,7) ) |X) |transpose((echo(X,4,6) +step(X,12) ) ,4) ) ,12) ,4) ,4) ) +transpose((transpose((((X+transpose((X|X) ,12) ) +X) |(echo(X,4,6) +(((X+X) +transpose((X+X) ,4) ) +transpose((X+X) ,7) ) ) ) ,-7) +transpose((((((X+transpose(transpose(X,-5) ,12) ) +transpose(shuffle(X) ,7) ) +transpose(((X+X) +transpose(((X+transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose((((X|X) +(X+X) ) +((X+transpose(X,7) ) |arpeggio(X) ) ) ,7) ) |(X|(X|X) ) ) ,7) ) ,7) ) ) ) |(transpose(((((transpose(echo(X,4,6) ,4) +(X|X) ) +transpose(transpose((X+(X+transpose(X,12) ) ) ,-5) ,12) ) |echo(((echo(transpose(X,4) ,4,6) +transpose((X|(transpose(X,-5) +transpose(X,4) ) ) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) ,4,6) ) +arpeggio((X+((transpose(X,-5) |(shuffle(X) +echo(X,4,6) ) ) |((arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ) ) ) ) ,-7) +transpose(transpose(transpose(transpose(shuffle(transpose(X,-7) ) ,-5) ,-5) ,-7) ,7) ) ) ,4) ) +transpose(echo((((transpose((((step(X,12) |((X+transpose(X,4) ) +transpose(X,7) ) ) |echo((X+X) ,4,6) ) +transpose(transpose(transpose(transpose(transpose(arpeggio(X) ,-7) ,4) ,4) ,-5) ,-7) ) ,-7) +transpose((((transpose((echo(transpose((((X+transpose(X,12) ) +transpose(X,7) ) +(((X+X) +transpose(X,4) ) +transpose(X,7) ) ) ,4) ,4,6) +transpose(echo(transpose(((transpose(X,-7) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,4) ) +transpose(((X+transpose(X,7) ) +X) ,7) ) ,4) ,4,6) ,12) ) ,4) |((transpose((step((X|X) ,12) +(X|(X+(X+X) ) ) ) ,-5) +(echo(X,4,6) +transpose(((X+transpose(X,-5) ) +transpose((X+transpose(X,7) ) ,12) ) ,-5) ) ) |(transpose((echo(X,4,6) +transpose((X+transpose(X,7) ) ,-5) ) ,-7) +transpose((((echo((X|X) ,4,6) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) ,12) ) ) ) +transpose(shuffle((transpose(shuffle(X) ,-5) +((((X+transpose(X,7) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose((((X|X) |transpose(X,-7) ) +transpose((transpose(X,-5) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ,7) ) ) ) ,4) ) +transpose(transpose(((transpose(step(X,12) ,-7) +transpose(transpose((arpeggio(transpose(X,-7) ) +transpose(X,-7) ) ,4) ,12) ) +(arpeggio(transpose(arpeggio(X) ,-5) ) +transpose(transpose(step((transpose(X,-7) +(transpose(shuffle(X) ,-7) +transpose(transpose(X,4) ,12) ) ) ,12) ,-5) ,7) ) ) ,4) ,7) ) ,12) ) +transpose((((shuffle((((((X+transpose((X+transpose(X,12) ) ,4) ) +transpose((X|X) ,7) ) +arpeggio(transpose(X,-7) ) ) +transpose((transpose(X,-5) +X) ,4) ) +transpose(transpose(transpose((X+X) ,-7) ,4) ,7) ) ) +transpose((transpose(step(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4) ,12) ,-5) +transpose(echo(((((X+(X+X) ) +transpose(X,4) ) +transpose(transpose(((transpose(transpose(X,4) ,-7) +transpose(((X+X) +(shuffle(X) |echo(X,4,6) ) ) ,4) ) +transpose(((X+X) +(X+X) ) ,7) ) ,-5) ,7) ) +step(step((arpeggio(X) +(((X+X) +transpose(arpeggio((X+transpose(X,7) ) ) ,4) ) +transpose((X|X) ,7) ) ) ,12) ,12) ) ,4,6) ,12) ) ,4) ) +transpose(arpeggio(transpose(transpose(step(transpose(echo(echo((arpeggio(X) |transpose(X,4) ) ,4,6) ,4,6) ,-7) ,12) ,4) ,-7) ) ,7) ) |shuffle(transpose(((((((transpose(shuffle(transpose(shuffle((X+transpose(X,12) ) ) ,-5) ) ,-5) +transpose((X+X) ,4) ) +transpose((((X|transpose(X,4) ) +transpose((echo((X+X) ,4,6) |(X+(X|X) ) ) ,4) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,7) ) ,7) ) +transpose(transpose((transpose(transpose(X,-5) ,-7) +((((X+transpose(X,12) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose((((X|X) +(X|X) ) |(X+transpose(step(X,12) ,7) ) ) ,4) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ) ,4) ,12) ) +transpose(transpose((((X+transpose((arpeggio(X) +X) ,4) ) +transpose((X+transpose(transpose(X,4) ,7) ) ,7) ) +transpose(arpeggio((arpeggio(X) |(X+X) ) ) ,12) ) ,-7) ,4) ) +transpose(transpose((X|echo(echo(X,4,6) ,4,6) ) ,4) ,7) ) +transpose(arpeggio(((transpose(echo(X,4,6) ,4) +transpose((X+transpose(X,-5) ) ,4) ) +transpose((X|X) ,7) ) ) ,12) ) ,-5) ) ) ,4) ) +transpose((transpose((step((transpose(X,4) +transpose((((X|X) |(X|X) ) +transpose((shuffle(X) +(X+transpose(X,7) ) ) ,12) ) ,4) ) ,12) +transpose((((shuffle(X) +transpose(X,7) ) +transpose(transpose(X,-7) ,12) ) |transpose((X+X) ,-5) ) ,-7) ) ,-7) +transpose((transpose((echo(shuffle(transpose(echo(((X+X) |echo(X,4,6) ) ,4,6) ,4) ) ,4,6) +((transpose(X,4) |(X+transpose(X,7) ) ) |arpeggio(((transpose(X,-7) +transpose(((X+transpose(X,12) ) +arpeggio(X) ) ,12) ) +transpose((transpose(echo(X,4,6) ,-5) +transpose(echo(transpose(X,-5) ,4,6) ,12) ) ,7) ) ) ) ) ,-5) +transpose((transpose(transpose(transpose((X+X) ,-7) ,4) ,-5) +transpose((echo(transpose((X+transpose(X,12) ) ,4) ,4,6) +transpose(((transpose(transpose(X,-7) ,-7) |(X|transpose(X,-7) ) ) +transpose(transpose((transpose(X,-5) +arpeggio(X) ) ,-5) ,7) ) ,4) ) ,7) ) ,12) ) ,12) ) ,7) ) ,4,6) ,7) ) ,4,6) )
random seed used was 6

NOTE: Generated phrase was too large ( 18220 ) , it has been truncated at 5000 notes. EXPR = shuffle((((((((((shuffle(transpose(step(X,12) ,4) ) +transpose((((echo(step((((X+transpose(X,7) ) +transpose(echo((X+X) ,4,6) ,4) ) +transpose(transpose(X,-7) ,7) ) ,12) ,4,6) +transpose(arpeggio((arpeggio(transpose(X,4) ) +transpose(transpose(X,4) ,12) ) ) ,4) ) +transpose(echo((step((((transpose(X,4) +transpose((X+transpose(X,4) ) ,12) ) +transpose((X+transpose(shuffle(echo(X,4,6) ) ,7) ) ,12) ) |transpose(transpose(X,-7) ,-5) ) ,12) +transpose(echo((((X+transpose(X,12) ) +transpose(((step(X,12) +transpose((X+X) ,4) ) +transpose(transpose(((X|X) +arpeggio(X) ) ,-5) ,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4,6) ,12) ) ,4,6) ,4) ) +transpose(echo((step(shuffle((((X|X) +transpose(transpose(transpose(X,-5) ,-7) ,4) ) +transpose(transpose((X+X) ,-7) ,7) ) ) ,12) |(transpose((X+transpose(transpose(X,4) ,12) ) ,4) +transpose((echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) +X) ,12) ) ) ,4,6) ,7) ) ,4) ) +transpose((transpose(transpose(transpose(arpeggio(X) ,4) ,4) ,4) +arpeggio((step((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +(step(step(X,12) ,12) +transpose(step(X,12) ,12) ) ) ,12) |((echo(X,4,6) +(X+transpose(X,7) ) ) +transpose(transpose(X,-7) ,-5) ) ) ) ) ,7) ) +transpose(step((((echo(transpose(X,-7) ,4,6) +X) +transpose(transpose(transpose(echo(X,4,6) ,-7) ,-5) ,7) ) |arpeggio((((arpeggio(transpose(X,-5) ) +transpose(transpose((((X|X) +transpose(transpose(X,-5) ,12) ) +transpose(X,4) ) ,4) ,12) ) +((transpose(X,-7) +transpose(((transpose((((X|X) +transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose((X+transpose(transpose(X,-7) ,7) ) ,4) ) +transpose(arpeggio(X) ,7) ) ,4) ) +transpose((arpeggio(transpose(X,4) ) +(X+(X|transpose(X,4) ) ) ) ,7) ) ) |(arpeggio(shuffle(transpose(X,-5) ) ) +transpose((arpeggio(transpose((X+X) ,4) ) +transpose(echo(X,4,6) ,12) ) ,12) ) ) ) ) ,12) ,4) ) +transpose(step(echo((((transpose(X,4) +transpose((X|step(X,12) ) ,7) ) +transpose(transpose((((X+transpose(X,4) ) +transpose(X,7) ) |(X+X) ) ,-7) ,4) ) +transpose((step(X,12) |shuffle((X+transpose(X,7) ) ) ) ,7) ) ,4,6) ,12) ,7) ) +transpose((transpose(transpose(transpose((transpose((X+X) ,4) |(((shuffle(X) +transpose((transpose(X,-5) +transpose((X+X) ,7) ) ,7) ) +transpose(((step(shuffle(X) ,12) +transpose((X+X) ,4) ) +transpose(arpeggio(X) ,7) ) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,-5) ,7) ) ) ,4) ,4) ,4) +transpose((((((echo((((X+X) +transpose(shuffle(X) ,12) ) +transpose((X|X) ,12) ) ,4,6) +arpeggio(transpose(step(X,12) ,4) ) ) |(((((((shuffle(X) +transpose((X+X) ,4) ) +transpose(X,7) ) +transpose(transpose(X,-7) ,7) ) +transpose(transpose(transpose(X,-7) ,-5) ,4) ) +transpose(transpose(transpose(arpeggio(X) ,4) ,4) ,7) ) +transpose(step(transpose(arpeggio(transpose(X,-5) ) ,4) ,12) ,4) ) +transpose(echo(((transpose(X,-5) +transpose(X,4) ) +transpose((arpeggio((X+X) ) +transpose(X,7) ) ,7) ) ,4,6) ,7) ) ) +((((X+transpose(X,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(echo(step((X+transpose(X,12) ) ,12) ,4,6) ,7) ) +(arpeggio(transpose(X,4) ) |transpose((transpose((X+transpose(X,7) ) ,-5) +transpose(step(X,12) ,-7) ) ,-5) ) ) ) +(echo(((transpose(X,-5) +transpose(transpose(X,4) ,4) ) +transpose(transpose(X,-7) ,7) ) ,4,6) +arpeggio((((echo(transpose(X,4) ,4,6) +(X+transpose(X,7) ) ) +transpose(((step(transpose(X,-5) ,12) +transpose((((X+transpose(shuffle(X) ,4) ) +transpose(X,7) ) +transpose((X+transpose(step(X,12) ,12) ) ,7) ) ,4) ) +transpose(transpose(shuffle((X|X) ) ,4) ,7) ) ,4) ) +transpose((transpose((X|X) ,-7) +step(shuffle(X) ,12) ) ,7) ) ) ) ) +(((shuffle((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,7) ) ) |((transpose(X,-5) +transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) ) +transpose(shuffle(transpose(X,-5) ) ,7) ) ) |((((X|transpose(X,-7) ) +transpose(((X|X) +shuffle(X) ) ,4) ) +transpose(step((X+X) ,12) ,4) ) +transpose((((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(((X|X) +transpose(X,12) ) ,7) ) |((((X+transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) +(X+step(X,12) ) ) ) ,7) ) ) |(transpose(transpose(X,4) ,4) +transpose(shuffle((echo(X,4,6) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ,7) ) ) ) ,7) ) ,4) ) +transpose(transpose(transpose(echo(transpose((step(transpose((step((X|X) ,12) |(((transpose(X,4) +transpose((X+transpose(X,12) ) ,12) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,-7) ,12) |((arpeggio(transpose(X,4) ) +transpose(shuffle(echo(((X|X) +transpose(shuffle(X) ,12) ) ,4,6) ) ,7) ) +transpose(transpose(((step((X+X) ,12) |echo(transpose(transpose(X,-5) ,-7) ,4,6) ) |(transpose(transpose(X,-7) ,4) +((shuffle(echo(X,4,6) ) +transpose(transpose(X,-5) ,4) ) +transpose((X|X) ,7) ) ) ) ,4) ,12) ) ) ,-5) ,4,6) ,-5) ,-7) ,7) ) +transpose((step(arpeggio((step(((transpose(transpose(transpose(X,-5) ,4) ,4) +(X+X) ) +transpose(transpose(step(X,12) ,4) ,-5) ) ,12) |((X+(X+transpose(X,12) ) ) |(transpose(((echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) +transpose(shuffle(shuffle(X) ) ,4) ) +transpose((X|X) ,7) ) ,4) +(transpose(transpose(transpose(X,4) ,4) ,-7) +transpose((X+transpose(X,7) ) ,7) ) ) ) ) ) ,12) +transpose((shuffle(transpose(transpose(transpose(transpose(((X+transpose(((arpeggio(X) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose(((X|X) +transpose(X,7) ) ,7) ) ,-7) ,-7) ,-5) ,4) ) +(transpose(transpose(transpose(transpose(transpose(transpose(X,-5) ,4) ,-5) ,4) ,-7) ,-7) +transpose(((transpose(transpose(transpose((X+X) ,-5) ,-7) ,-5) |((transpose(X,-7) +transpose(((X+transpose(X,7) ) |((X+transpose(X,7) ) +transpose(X,7) ) ) ,12) ) +(echo((X+transpose((X|X) ,7) ) ,4,6) +shuffle(echo(X,4,6) ) ) ) ) +transpose((transpose((transpose(((X+transpose(echo((X+transpose(X,7) ) ,4,6) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,4) +transpose((((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) +transpose((X+transpose((X+X) ,7) ) ,7) ) +transpose(step(step(X,12) ,12) ,12) ) +transpose(transpose((transpose(X,4) +transpose(X,7) ) ,-7) ,4) ) +transpose(((echo(X,4,6) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,7) ) ,4) ) +transpose((X|X) ,7) ) ,7) ) ,7) ) ,-7) |((transpose(transpose(X,4) ,-7) +transpose(echo(((transpose(arpeggio(X) ,4) +transpose(step(arpeggio(echo(X,4,6) ) ,12) ,4) ) +transpose(X,7) ) ,4,6) ,12) ) |shuffle((X+transpose((X+transpose(X,12) ) ,12) ) ) ) ) ,7) ) ,12) ) ) ,12) ) ,12) ) +((transpose(step((transpose((((((transpose(transpose(X,-7) ,-7) +transpose(((X+X) +X) ,7) ) |X) +transpose(transpose(((arpeggio(X) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,-5) ,7) ) +(transpose(((transpose(X,4) +transpose((X+transpose(X,12) ) ,4) ) +transpose((X+X) ,7) ) ,-7) +transpose((X+transpose(transpose(X,-7) ,7) ) ,12) ) ) +transpose((X|transpose((transpose(X,4) +transpose(X,-7) ) ,4) ) ,12) ) ,-5) |((step(transpose(transpose(transpose((X+X) ,-5) ,-7) ,-7) ,12) +transpose(step((((((echo((X|X) ,4,6) +transpose((transpose(transpose(X,-5) ,-7) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ,4) ) +transpose(((X|X) |transpose((X|X) ,-7) ) ,7) ) |(step(X,12) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ) ) +transpose(echo((X+transpose(transpose(X,-7) ,7) ) ,4,6) ,4) ) +transpose((((X+transpose((X+transpose(X,12) ) ,4) ) +transpose((X+X) ,7) ) +transpose(echo(shuffle((X+X) ) ,4,6) ,12) ) ,7) ) ,12) ,4) ) +transpose((echo((X|transpose(X,-5) ) ,4,6) +arpeggio((echo(transpose(X,4) ,4,6) |X) ) ) ,7) ) ) ,12) ,4) +transpose(((transpose((((transpose((((X+X) +transpose(step((X+X) ,12) ,7) ) +transpose(X,4) ) ,-7) +(echo(X,4,6) +transpose((transpose(X,4) +transpose(transpose(X,-7) ,12) ) ,7) ) ) |transpose(((((X+transpose(X,12) ) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) |(X|(X+transpose(X,12) ) ) ) ,4) ) +transpose(transpose(step((transpose(X,-5) |echo(X,4,6) ) ,12) ,-7) ,-7) ) ,-5) |echo(transpose(((((transpose((X+transpose(X,12) ) ,-7) +transpose(((transpose(X,4) +transpose(echo(step(X,12) ,4,6) ,4) ) +transpose(transpose(step(X,12) ,4) ,7) ) ,7) ) +transpose((((X+transpose(step(transpose(X,4) ,12) ,4) ) +transpose(transpose((X+X) ,-5) ,7) ) +transpose(transpose(transpose(X,4) ,4) ,7) ) ,12) ) |((transpose((X|X) ,-5) |X) |transpose(((transpose(X,-5) +transpose(X,4) ) +transpose((X+X) ,7) ) ,4) ) ) +transpose(transpose(((transpose(X,4) +transpose(((echo(transpose(X,4) ,4,6) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ,4) ) +transpose((X|X) ,7) ) ,4) ,7) ) ,4) ,4,6) ) |transpose((transpose((step(echo(echo(X,4,6) ,4,6) ,12) +transpose(transpose(transpose(X,4) ,-7) ,7) ) ,-7) |transpose(transpose(transpose(arpeggio(X) ,-7) ,-5) ,-5) ) ,4) ) ,12) ) |((step(transpose(transpose(transpose(transpose((((X+X) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ,-5) ,-5) ,4) ,4) ,12) +((((transpose((echo(X,4,6) +transpose((X+X) ,7) ) ,-7) +(step(transpose(X,-5) ,12) +X) ) +transpose((transpose(echo((shuffle(X) +transpose((X+X) ,12) ) ,4,6) ,4) +((X+(X+X) ) +transpose(transpose(transpose(transpose(X,-7) ,-5) ,-7) ,7) ) ) ,4) ) +transpose(transpose(transpose((((step((X+X) ,12) +transpose((((X|X) |transpose(X,-7) ) |(X+X) ) ,12) ) +transpose(echo(((X+transpose(X,4) ) +transpose(shuffle(X) ,7) ) ,4,6) ,4) ) +transpose((step(X,12) +transpose(transpose(X,-7) ,12) ) ,7) ) ,-5) ,-5) ,7) ) +transpose(transpose(transpose(transpose(transpose(shuffle((X|X) ) ,4) ,4) ,-5) ,-5) ,12) ) ) +transpose(echo(shuffle((transpose((step((X|arpeggio(X) ) ,12) |(transpose(step(X,12) ,-5) +transpose(echo(X,4,6) ,-7) ) ) ,4) |transpose(shuffle(transpose(shuffle(X) ,4) ) ,4) ) ) ,4,6) ,7) ) ) ) |(((transpose(arpeggio((transpose(transpose(X,4) ,4) |arpeggio(((step(transpose(step(X,12) ,4) ,12) +echo((X+transpose(X,12) ) ,4,6) ) +transpose((transpose((X+X) ,-5) +transpose(((echo(X,4,6) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) ,12) ) ,-7) ) ) ) ) ,-7) +transpose(step(echo(transpose((X|X) ,-5) ,4,6) ,12) ,-7) ) +((shuffle(transpose(((shuffle((transpose(X,4) +((X+X) |X) ) ) |arpeggio(((echo(transpose(arpeggio(X) ,-7) ,4,6) +(X+(X+X) ) ) +step(((transpose(X,4) +transpose((X+transpose(X,7) ) ,7) ) +transpose((transpose(X,4) |transpose(X,-7) ) ,12) ) ,12) ) ) ) +transpose((step((X|X) ,12) +transpose(transpose((X+transpose(X,7) ) ,-7) ,7) ) ,7) ) ,-5) ) +transpose(transpose((transpose((transpose(X,4) |shuffle(X) ) ,-5) +transpose(arpeggio(step(transpose(X,-5) ,12) ) ,7) ) ,4) ,4) ) +transpose(((step((transpose((((X|X) |transpose(X,-5) ) |transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-5) ) ,4) |transpose((X+transpose(X,7) ) ,-5) ) ,12) +transpose((echo((transpose(((transpose(transpose(X,-7) ,-7) +transpose(step(arpeggio(X) ,12) ,12) ) +transpose(((X+(transpose((X+transpose(X,12) ) ,4) +transpose((transpose(X,-7) |transpose(X,-7) ) ,7) ) ) +((((arpeggio(X) |(X+transpose(X,12) ) ) |arpeggio((X|X) ) ) +transpose(echo(X,4,6) ,4) ) +transpose(arpeggio(X) ,7) ) ) ,12) ) ,-5) |((((X+((X+echo(X,4,6) ) |(X+transpose(X,7) ) ) ) |transpose(X,-5) ) +transpose((X+X) ,4) ) +transpose(transpose(((transpose(echo(X,4,6) ,4) +transpose(transpose(((X+X) |(X|X) ) ,-5) ,7) ) |(transpose(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) +echo((X|X) ,4,6) ) ) ,4) ,7) ) ) ,4,6) +transpose(echo((arpeggio(X) +(((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,-7) ) ) ,4,6) ,7) ) ,4) ) +transpose((((echo((step((X|X) ,12) +transpose(X,-7) ) ,4,6) |transpose((transpose(X,-7) +transpose((X|X) ,-5) ) ,-7) ) +transpose(transpose((((((step(step(X,12) ,12) +transpose(transpose(X,4) ,7) ) +transpose(((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4) ) +transpose((echo(X,4,6) +transpose(arpeggio(X) ,12) ) ,7) ) +transpose(X,7) ) +transpose(transpose(transpose(transpose(echo(X,4,6) ,-7) ,-5) ,-7) ,7) ) ,-7) ,4) ) +transpose(transpose(transpose((transpose(transpose((((X+transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) +(transpose(X,4) +step(X,12) ) ) ,4) ,-7) +transpose(transpose((X+transpose(step(X,12) ,12) ) ,4) ,12) ) ,-7) ,4) ,7) ) ,7) ) ,7) ) ) +transpose(echo(shuffle(step((transpose(transpose((transpose(echo(X,4,6) ,4) +transpose(((X+transpose(X,12) ) +X) ,12) ) ,-7) ,4) +transpose((arpeggio((((X|transpose(X,-7) ) +transpose(transpose(transpose(transpose(X,-7) ,4) ,-5) ,4) ) +transpose(echo(transpose((X+transpose(X,12) ) ,4) ,4,6) ,7) ) ) |echo(transpose(((transpose((X+transpose(X,7) ) ,-5) +transpose(arpeggio(X) ,4) ) +transpose(transpose(X,-5) ,7) ) ,4) ,4,6) ) ,12) ) ,12) ) ,4,6) ,12) ) ) )
random seed used was 0 EXPR = echo(transpose(step(shuffle(step((transpose((step((transpose(X,-5) |step(transpose(X,-5) ,12) ) ,12) |transpose((X|transpose(X,4) ) ,-5) ) ,4) |(transpose(transpose(transpose(transpose(X,-5) ,4) ,4) ,-7) |(transpose((((X|transpose((X+transpose(X,12) ) ,-5) ) |(arpeggio(X) +X) ) |(X+transpose(X,12) ) ) ,-5) +transpose(((X+transpose(X,7) ) +transpose(transpose((transpose(X,4) +transpose(X,12) ) ,-5) ,7) ) ,12) ) ) ) ,12) ) ,12) ,-5) ,4,6)
random seed used was 0 EXPR = (transpose(arpeggio(arpeggio((transpose(transpose(step((X+transpose(X,7) ) ,12) ,-7) ,4) |((transpose(((step(X,12) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) ,-7) +transpose((transpose(((X+transpose(X,12) ) |(X+transpose(X,12) ) ) ,-7) |transpose(echo(X,4,6) ,-5) ) ,7) ) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) |X) +transpose(((transpose(transpose(((X+transpose(arpeggio(X) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4) ,4) +transpose(step((((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,4) ) ,12) ,4) ) +transpose(((X+transpose(X,12) ) +(X+X) ) ,7) ) ,4) ) +transpose((transpose(((transpose(X,4) +X) +arpeggio(echo(X,4,6) ) ) ,4) |(((X|(X+X) ) +transpose((transpose(X,-7) +transpose(X,7) ) ,7) ) +(X+((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) ,7) ) ,7) ) ) ) ) ,4) +((((((transpose(transpose((transpose(transpose(X,-5) ,4) +transpose(echo(transpose((X+transpose(X,7) ) ,-5) ,4,6) ,12) ) ,4) ,4) +((((X+transpose(transpose(X,-5) ,12) ) +transpose((((X+X) +((step(X,12) +transpose((X+X) ,4) ) +transpose(X,7) ) ) |(transpose(X,-7) +transpose(X,-5) ) ) ,4) ) +transpose((transpose(arpeggio(X) ,-7) +transpose((X+X) ,4) ) ,7) ) |transpose(((((X|X) +transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) +((X+transpose(X,7) ) |transpose(X,4) ) ) ,-5) ) ) +(((transpose(transpose(((X+transpose((X|X) ,4) ) +transpose((X|X) ,7) ) ,-7) ,-5) +transpose(transpose((shuffle(step(X,12) ) +transpose((X+transpose((X+transpose(X,7) ) ,7) ) ,7) ) ,4) ,12) ) +transpose((transpose(transpose(shuffle(X) ,4) ,4) +transpose(transpose((X+(X+transpose(X,12) ) ) ,-7) ,7) ) ,12) ) +transpose(arpeggio((X+transpose(X,12) ) ) ,4) ) ) +transpose(transpose(echo((transpose(((arpeggio((X+transpose(X,7) ) ) |arpeggio(transpose(X,-7) ) ) +((X+X) |step(X,12) ) ) ,4) |(arpeggio(transpose(X,-5) ) +shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) ,4,6) ,4) ,7) ) |(arpeggio((step(transpose(X,4) ,12) +transpose((X+transpose(X,-7) ) ,7) ) ) +transpose(echo(((((X|X) |(X|(X+transpose(X,12) ) ) ) +(X+transpose(transpose((X+transpose(X,12) ) ,-5) ,7) ) ) +arpeggio((step(X,12) +transpose(echo(X,4,6) ,12) ) ) ) ,4,6) ,7) ) ) +transpose(transpose(echo(transpose((transpose(((transpose(transpose(((X+transpose(X,4) ) +transpose((X+X) ,7) ) ,-7) ,-7) +transpose(transpose(((arpeggio(transpose(X,-7) ) +transpose((transpose(X,-5) +transpose(((X+X) +X) ,12) ) ,7) ) +transpose(echo(((X+transpose(X,12) ) +transpose(transpose(X,-7) ,12) ) ,4,6) ,12) ) ,-7) ,4) ) +transpose(arpeggio(echo((transpose(X,4) +transpose(X,7) ) ,4,6) ) ,7) ) ,4) +transpose(shuffle((shuffle(echo(((X+transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ,4,6) ) +transpose(transpose(((X+transpose(X,12) ) +transpose(X,4) ) ,4) ,12) ) ) ,-7) ) ,-7) ,4,6) ,4) ,12) ) +transpose((((transpose((arpeggio(((((X|(transpose(X,4) +(X+X) ) ) +transpose(transpose((echo(transpose(transpose(X,-5) ,4) ,4,6) |((step(X,12) |echo(X,4,6) ) +transpose(transpose((X|X) ,-7) ,7) ) ) ,-5) ,4) ) +transpose(arpeggio((transpose(arpeggio(X) ,-7) +transpose((X|X) ,12) ) ) ,7) ) +((transpose((step(transpose(X,-7) ,12) |(step(X,12) |transpose(X,4) ) ) ,-7) +transpose(X,12) ) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ) ) ) |transpose(((transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4) +transpose((transpose(arpeggio(X) ,-5) +((transpose(transpose(X,-5) ,-5) +(X|step(X,12) ) ) +transpose(transpose(transpose(X,-5) ,4) ,12) ) ) ,4) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ,-5) ) ,4) |transpose((((step(((transpose((X|X) ,4) +transpose((X+transpose(X,12) ) ,4) ) +transpose(((X|X) +transpose((X+X) ,12) ) ,7) ) ,12) +transpose((transpose(X,-5) +transpose((((X+X) +transpose(X,4) ) +transpose((X|X) ,7) ) ,12) ) ,7) ) +transpose(transpose(transpose(echo(transpose((X+X) ,-5) ,4,6) ,-5) ,-7) ,12) ) |step((((echo(transpose(X,-7) ,4,6) +transpose((arpeggio(echo(X,4,6) ) |((step(X,12) +transpose((X|X) ,4) ) +transpose(step(X,12) ,7) ) ) ,12) ) +(transpose(transpose(step(X,12) ,-7) ,4) +transpose(((X|X) +transpose(X,12) ) ,7) ) ) +(transpose(transpose((X|X) ,-5) ,-5) +arpeggio(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ) ) ,12) ) ,4) ) +transpose(transpose(shuffle(step((((((transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) +((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +((X+transpose(X,12) ) +shuffle(X) ) ) |transpose(transpose(X,4) ,4) ) ) +transpose(echo(transpose(echo(transpose(transpose(X,-5) ,-7) ,4,6) ,-5) ,4,6) ,7) ) +transpose(echo(transpose(arpeggio(echo(step(transpose(X,-5) ,12) ,4,6) ) ,4) ,4,6) ,12) ) +transpose(((transpose(arpeggio(step(X,12) ) ,-7) +(transpose((((X+X) +transpose(X,-5) ) +transpose((X+transpose(X,7) ) ,7) ) ,4) +((shuffle(X) +transpose(X,4) ) +(transpose(X,-7) +transpose((X+transpose(X,7) ) ,12) ) ) ) ) +transpose((((X+transpose(X,7) ) +transpose(shuffle(((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,12) ) |(((step(X,12) +transpose(shuffle(X) ,12) ) +((X+X) +transpose((X+transpose(X,7) ) ,7) ) ) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ) ,4) ) ,4) ) +transpose(transpose(((transpose(((((((X|(X+X) ) +transpose(step(((X+transpose(X,7) ) +(X+transpose(X,7) ) ) ,12) ,4) ) +transpose(((X+X) +transpose(transpose(X,-5) ,-5) ) ,7) ) +transpose(step(X,12) ,12) ) +transpose(transpose(transpose((echo(X,4,6) |arpeggio(X) ) ,-7) ,-7) ,4) ) +transpose(((transpose((X+transpose((X|X) ,7) ) ,-7) |(((X+transpose(X,7) ) +echo(X,4,6) ) +transpose(arpeggio(transpose(X,4) ) ,12) ) ) |transpose(arpeggio(X) ,4) ) ,7) ) ,4) +transpose((shuffle((X+transpose(((((X+transpose(X,7) ) +echo(X,4,6) ) +transpose((echo(X,4,6) +transpose((X+X) ,7) ) ,4) ) +transpose(transpose((X+transpose(X,7) ) ,-7) ,7) ) ,12) ) ) +transpose(arpeggio(((X+X) +(X+X) ) ) ,-7) ) ,4) ) +transpose(((transpose((X+transpose(X,7) ) ,4) +transpose((transpose(X,-7) +transpose((X|(X+transpose(X,7) ) ) ,7) ) ,4) ) |shuffle(transpose((X|arpeggio(X) ) ,-5) ) ) ,7) ) ,4) ,7) ) ,12) ) ,4) ,4) ) +transpose(transpose(step(shuffle(transpose(transpose(((step((((X+transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) |transpose(X,4) ) ,12) +transpose(shuffle(transpose((X+transpose(X,12) ) ,-5) ) ,4) ) +transpose(transpose(((X+transpose((X+X) ,7) ) |step(X,12) ) ,4) ,7) ) ,-5) ,4) ) ,12) ,-5) ,7) ) ,12) ) )
random seed used was 0


The algorithm for Expresso is written in KeyKit, and here's the source code.