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:
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After 20 generations the expression "X" became this:
(transpose(transpose((transpose(transpose((((((transpose(((transpose(X,4) +(X+transpose(X,12) ) ) +(X+X) ) ,-5) +(echo(arpeggio(transpose(X,-5) ) ,4,6) +transpose(((echo(((X+X) +transpose(X,12) ) ,4,6) +transpose(X,-7) ) |echo((X+(X|X) ) ,4,6) ) ,-7) ) ) +(step(echo((((transpose(X,-5) +transpose((X+transpose(X,12) ) ,7) ) |X) |transpose((X|X) ,-5) ) ,4,6) ,12) +transpose((transpose((((transpose(X,4) +step(X,12) ) +transpose(transpose(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-5) ,-7) ,7) ) +(arpeggio(arpeggio((X+transpose(X,7) ) ) ) +transpose((X+(X|X) ) ,7) ) ) ,-7) |step((shuffle((X|X) ) +transpose((transpose(X,4) |(X+transpose(X,12) ) ) ,-5) ) ,12) ) ,7) ) ) +step(echo(transpose(transpose(shuffle(transpose(((X+X) +transpose(transpose(X,-7) ,12) ) ,-7) ) ,-7) ,-7) ,4,6) ,12) ) +(transpose(((echo((transpose((X|X) ,4) +step(X,12) ) ,4,6) +transpose((((X+transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(arpeggio(X) ,7) ) ,12) ) +transpose((transpose(X,-7) +transpose(((((X+transpose(X,12) ) |transpose(X,4) ) +transpose(shuffle(transpose(X,-5) ) ,7) ) +echo(X,4,6) ) ,12) ) ,12) ) ,-7) |arpeggio(transpose((X+transpose(X,12) ) ,4) ) ) ) +transpose(transpose(((((arpeggio((arpeggio((X+X) ) +(transpose((X|X) ,4) |((X|X) +X) ) ) ) +transpose((shuffle(step(shuffle(X) ,12) ) +((transpose(X,4) +transpose(shuffle(X) ,7) ) +transpose(transpose(X,-7) ,4) ) ) ,12) ) +transpose(((transpose(transpose((X|X) ,-5) ,-5) +transpose(shuffle(((transpose(X,-5) +transpose(transpose(X,-7) ,12) ) |((X+transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ) ) ,4) ) |(shuffle(shuffle((((X|X) +X) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ) ) +transpose((X+transpose(transpose(transpose(X,-5) ,4) ,7) ) ,7) ) ) ,12) ) +(echo((transpose(X,-5) +echo(X,4,6) ) ,4,6) +transpose(echo((step(echo(transpose(X,4) ,4,6) ,12) +(step(transpose(X,-7) ,12) +transpose(transpose(X,-7) ,-5) ) ) ,4,6) ,12) ) ) +transpose(((((echo(X,4,6) +transpose((arpeggio(X) |transpose(X,-5) ) ,4) ) +transpose((X+shuffle(X) ) ,7) ) +transpose((X+X) ,-7) ) +transpose(((step((X+transpose(arpeggio(X) ,12) ) ,12) +transpose((((transpose(arpeggio(X) ,4) +(transpose(X,-7) +transpose(((transpose(X,-5) +transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) ,7) ) ) |((transpose(X,-7) +transpose((X+X) ,7) ) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ) |(transpose(step(transpose(X,-7) ,12) ,-5) +transpose(echo(arpeggio(transpose(X,4) ) ,4,6) ,7) ) ) ,4) ) +transpose(((transpose((transpose(X,-7) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose(transpose((transpose(((shuffle(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) ,-5) +transpose(X,-5) ) ,-5) ,7) ) ,7) ) ,12) ) ,12) ) ,4) ,7) ) ,-5) ,-7) |(step(echo(transpose(((transpose(transpose(((transpose(transpose(arpeggio(X) ,-5) ,-7) |X) |transpose((transpose(X,4) +transpose(arpeggio(X) ,4) ) ,-5) ) ,4) ,-5) +transpose((transpose(((echo(X,4,6) +transpose((echo(X,4,6) +transpose(X,-5) ) ,7) ) +transpose(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(((X|X) +X) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(step(step(X,12) ,12) ,7) ) ,-5) ) ,4) +transpose(transpose(((echo(((((X|X) +transpose(((transpose(X,4) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,7) ) +transpose(arpeggio((X+transpose(X,7) ) ) ,4) ) +transpose((X+X) ,7) ) ,4,6) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) +transpose(arpeggio((X+X) ) ,7) ) ,4) ) +transpose(transpose(transpose((X+X) ,4) ,-7) ,7) ) ,-5) ,7) ) ,4) ) +transpose((transpose(transpose(echo(transpose(X,-7) ,4,6) ,-7) ,4) +transpose(shuffle(transpose((X+transpose(X,7) ) ,-7) ) ,7) ) ,7) ) ,-5) ,4,6) ,12) +((((((((echo(transpose((X+transpose(X,7) ) ,-5) ,4,6) +transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4) ) +transpose(transpose(step((X+transpose(transpose(X,4) ,7) ) ,12) ,-7) ,12) ) +transpose(((transpose(transpose(X,-7) ,-7) |transpose(step(arpeggio(transpose(X,-7) ) ,12) ,4) ) +X) ,7) ) +transpose((((transpose((arpeggio(X) +transpose((X+transpose(transpose(transpose(X,4) ,-7) ,12) ) ,7) ) ,-7) +transpose(((arpeggio(((X|transpose(X,4) ) +transpose(transpose((X+X) ,4) ,12) ) ) +transpose(X,7) ) +transpose(step((step((X|X) ,12) |transpose(arpeggio(X) ,-7) ) ,12) ,12) ) ,7) ) +transpose(((((((((((X+X) +transpose((transpose(X,-5) +transpose(X,12) ) ,4) ) +transpose(transpose(transpose(X,4) ,-7) ,7) ) +transpose(step(((X|X) +transpose((X+X) ,7) ) ,12) ,4) ) +transpose(((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) |((transpose(((X+transpose(X,12) ) +transpose(transpose(X,-5) ,12) ) ,-7) |echo(X,4,6) ) +transpose(X,4) ) ) +transpose(((echo(transpose(X,-7) ,4,6) +transpose(transpose(((X|X) |X) ,4) ,4) ) +transpose(transpose((shuffle(X) +step(transpose(X,4) ,12) ) ,-5) ,7) ) ,4) ) +transpose(((transpose(X,4) +transpose((X+transpose(X,-5) ) ,12) ) |arpeggio(X) ) ,7) ) +transpose(transpose(transpose(transpose(X,4) ,-7) ,4) ,12) ) +transpose(((transpose((arpeggio((transpose(X,-5) +shuffle(X) ) ) +transpose(X,7) ) ,-7) +transpose((transpose(transpose(transpose(X,4) ,4) ,-7) |transpose(transpose((X+transpose((X+transpose(X,12) ) ,12) ) ,-5) ,4) ) ,7) ) +transpose((shuffle((echo(X,4,6) +transpose(arpeggio(X) ,-7) ) ) +transpose(transpose(transpose(transpose(transpose(X,-7) ,4) ,-5) ,4) ,7) ) ,12) ) ,12) ) ,4) ) +transpose(step(shuffle(transpose(((step((((X+transpose((X|X) ,7) ) +transpose(transpose(X,-7) ,-5) ) +transpose((echo(X,4,6) +transpose(X,-5) ) ,12) ) ,12) +transpose((X+transpose(transpose(X,-5) ,12) ) ,12) ) +transpose(transpose((transpose(transpose(X,4) ,4) +transpose((transpose(((transpose(X,-7) +transpose(echo(X,4,6) ,4) ) +transpose((X|X) ,7) ) ,-5) +transpose((X|X) ,4) ) ,12) ) ,-7) ,12) ) ,4) ) ,12) ,7) ) ,4) ) +transpose(step(transpose(step((((((transpose(step(X,12) ,-7) +X) +transpose(((transpose(arpeggio(X) ,-5) +transpose(X,4) ) +transpose(((X|echo(X,4,6) ) |echo(X,4,6) ) ,7) ) ,4) ) +transpose((echo(((X+transpose(X,12) ) +X) ,4,6) +X) ,7) ) +transpose((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(transpose((transpose(X,-5) |(X+((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,-5) ,7) ) +transpose(transpose(((echo((X+X) ,4,6) |(X+X) ) +transpose(shuffle((transpose(X,-5) +transpose(X,7) ) ) ,12) ) ,-5) ,7) ) ,4) ) +transpose(arpeggio(transpose(transpose((X+transpose(transpose(X,4) ,7) ) ,-5) ,-7) ) ,7) ) ,12) ,-5) ,12) ,7) ) +transpose(transpose((echo(transpose(transpose(transpose(X,-5) ,-5) ,4) ,4,6) |transpose((transpose((echo(echo(X,4,6) ,4,6) |((((X+transpose(X,12) ) +transpose(X,-5) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ) ,-5) +transpose((step(X,12) +transpose(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,7) ) ,-7) ,7) ) ,12) ) ,-5) ) ,-7) ,4) ) +transpose(step(arpeggio(transpose(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +((((X+X) +transpose(X,4) ) +transpose(X,7) ) |((step(X,12) +transpose(transpose(X,-5) ,7) ) +((X+transpose(X,7) ) |X) ) ) ) ,4) ,-7) ) ,12) ,7) ) +transpose((transpose(((((X+transpose(X,12) ) +transpose((transpose(X,4) +transpose(echo(X,4,6) ,12) ) ,12) ) +transpose(transpose(shuffle((((X|X) +transpose(transpose(X,4) ,12) ) |shuffle(X) ) ) ,-7) ,7) ) |echo(transpose(((((arpeggio(X) +transpose((step(X,12) +transpose((X+transpose(X,7) ) ,12) ) ,12) ) |transpose(transpose(X,-5) ,-7) ) +transpose(echo((shuffle(X) +transpose((X+X) ,12) ) ,4,6) ,12) ) +transpose((transpose(((X+transpose(transpose(X,-7) ,12) ) +(echo(X,4,6) |shuffle(X) ) ) ,-7) +(transpose(((X|X) +X) ,4) +transpose(((X|X) +X) ,4) ) ) ,12) ) ,-5) ,4,6) ) ,-7) +(step((arpeggio((arpeggio(((transpose(step(transpose(shuffle(transpose(X,4) ) ,-7) ,12) ,4) +transpose((((transpose(X,-5) +transpose(transpose(X,4) ,12) ) +transpose(shuffle(arpeggio(X) ) ,12) ) +transpose(transpose((X+transpose(X,7) ) ,-7) ,12) ) ,7) ) |step((transpose(transpose(shuffle((X+transpose(X,7) ) ) ,4) ,4) |(X+transpose(transpose(transpose(X,-5) ,4) ,12) ) ) ,12) ) ) +transpose(transpose(step((((X+transpose(transpose(X,-7) ,4) ) +transpose(transpose(X,-5) ,7) ) +shuffle(transpose(X,4) ) ) ,12) ,4) ,12) ) ) +transpose((((transpose(((X+X) |(step(X,12) +((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,-7) |((((X+X) +transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose((echo(X,4,6) |echo(X,4,6) ) ,7) ) ) |(step(transpose(transpose(transpose((X|X) ,4) ,-7) ,4) ,12) |((echo(X,4,6) |((X+transpose(X,12) ) +transpose((X+X) ,7) ) ) +transpose((shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) |step(transpose(X,4) ,12) ) ,7) ) ) ) +transpose((transpose(transpose((X|(X+X) ) ,-7) ,-7) +(transpose(step(X,12) ,-5) +(transpose(X,-7) +transpose(X,12) ) ) ) ,12) ) ,7) ) ,12) +echo(shuffle(transpose(arpeggio(step((((echo(X,4,6) +transpose(X,4) ) +transpose((X+X) ,7) ) +((((transpose((X|X) ,4) +transpose(arpeggio(X) ,4) ) +transpose(arpeggio(X) ,7) ) +transpose((X+X) ,4) ) +transpose(transpose(arpeggio(X) ,-5) ,7) ) ) ,12) ) ,-5) ) ,4,6) ) ) ,12) ) ) ) ,-7) ,-5) +transpose((((shuffle(transpose(((((transpose((transpose(((transpose((((((X+transpose((X+X) ,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(((X+transpose(X,12) ) +transpose(X,12) ) ,7) ) +transpose(step(transpose(X,-5) ,12) ,4) ) +transpose(transpose(arpeggio(step(X,12) ) ,-5) ,7) ) ,4) +transpose((((((shuffle((X+X) ) +transpose(echo(X,4,6) ,4) ) +transpose((arpeggio(X) |echo(X,4,6) ) ,7) ) +transpose(transpose(((arpeggio(X) +transpose((shuffle(X) |(X+transpose(X,7) ) ) ,4) ) +transpose((transpose(X,-7) +(X+X) ) ,7) ) ,-7) ,12) ) +transpose((((transpose(transpose(X,-7) ,-7) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) |transpose(transpose(transpose(X,4) ,-5) ,4) ) ,4) ) +transpose(transpose((transpose((transpose(X,4) +transpose(X,4) ) ,-5) +(transpose(X,4) +transpose(echo(X,4,6) ,7) ) ) ,-5) ,7) ) ,4) ) +transpose((transpose(step(step(X,12) ,12) ,-7) +(X+transpose(transpose((X+transpose(X,7) ) ,4) ,7) ) ) ,7) ) ,4) +step(shuffle(arpeggio(transpose(((X|X) +transpose(X,12) ) ,4) ) ) ,12) ) ,4) +transpose(shuffle(shuffle(arpeggio(transpose(step(transpose((((X|(X+X) ) |echo(X,4,6) ) +transpose(transpose((X+X) ,4) ,4) ) ,4) ,12) ,-7) ) ) ) ,4) ) +transpose(transpose((step(transpose(transpose(transpose((X|X) ,-5) ,-7) ,4) ,12) +transpose((shuffle(transpose(((transpose(X,4) +transpose(X,-7) ) +transpose(((X|X) +((X+transpose(X,12) ) +echo(X,4,6) ) ) ,12) ) ,-5) ) +(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) +transpose(((X+transpose((X+transpose(X,12) ) ,7) ) +(X+transpose(X,7) ) ) ,-5) ) ) ,4) ) ,-5) ,7) ) +transpose((((((((((X+transpose(X,7) ) +X) |arpeggio(transpose(X,-5) ) ) +transpose((transpose(transpose(X,4) ,-7) |(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio((X+X) ) ,4) ) +transpose((transpose(X,-5) |(X+transpose(X,7) ) ) ,7) ) |(X|X) ) ) ,7) ) +transpose(transpose(((X|step(X,12) ) +shuffle(X) ) ,4) ,4) ) +transpose(transpose(step(X,12) ,4) ,7) ) +transpose(transpose(((transpose(transpose(echo(X,4,6) ,-7) ,-7) |((step(transpose(X,-7) ,12) +transpose((((X|X) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,7) ) +transpose((X+transpose(X,12) ) ,12) ) ) +transpose(transpose(transpose((X+X) ,-5) ,-7) ,7) ) ,-5) ,7) ) +transpose((shuffle((transpose((transpose(X,-5) +transpose(X,4) ) ,-7) +((transpose(shuffle(X) ,-7) +transpose((X+transpose((X+X) ,7) ) ,7) ) +(echo(step(X,12) ,4,6) +echo(X,4,6) ) ) ) ) +((arpeggio(echo((transpose(X,4) +transpose((echo(X,4,6) |X) ,12) ) ,4,6) ) +transpose((transpose((arpeggio((X+X) ) +transpose(transpose(X,-5) ,12) ) ,4) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +step(X,12) ) ,7) ) ,4) ) +transpose(transpose((X+transpose((X+X) ,7) ) ,4) ,7) ) ) ,-5) ) +transpose(echo((transpose(transpose((((transpose(transpose((X+X) ,4) ,-7) +(((X+transpose((X|X) ,7) ) +transpose(arpeggio(X) ,4) ) +transpose(transpose(X,-7) ,7) ) ) +transpose(transpose((((transpose(X,4) +transpose((X+X) ,4) ) +transpose((X+X) ,7) ) +transpose((X+X) ,12) ) ,-5) ,7) ) |((((X+transpose(transpose(X,-5) ,7) ) |transpose(transpose(X,4) ,4) ) +transpose((transpose(transpose(X,-5) ,-7) |arpeggio(X) ) ,4) ) +transpose(transpose(transpose(transpose(X,4) ,4) ,-7) ,7) ) ) ,4) ,-5) +transpose(transpose((step(echo(transpose(arpeggio(arpeggio(echo(X,4,6) ) ) ,-5) ,4,6) ,12) +((transpose((X+transpose(transpose(X,4) ,-5) ) ,-7) +transpose(transpose(echo(X,4,6) ,-5) ,7) ) |(transpose(X,-5) +transpose(transpose((X+transpose(X,7) ) ,-5) ,7) ) ) ) ,4) ,7) ) ,4,6) ,12) ) ,4) ) +transpose((((step((((arpeggio(echo(X,4,6) ) +transpose((X+transpose(shuffle(transpose(X,-5) ) ,12) ) ,12) ) +transpose(transpose(transpose(X,-7) ,4) ,12) ) +arpeggio(((X|((X+transpose(X,7) ) +transpose(echo(X,4,6) ,7) ) ) +(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) +(X+transpose(X,12) ) ) ) ) ) ,12) +transpose((arpeggio(transpose(((transpose(transpose(X,-5) ,-7) |(shuffle(X) +transpose(transpose(X,-7) ,12) ) ) +step(transpose(X,-5) ,12) ) ,-5) ) +transpose(transpose(transpose((X+transpose(step(X,12) ,12) ) ,-7) ,4) ,7) ) ,-7) ) +transpose((transpose(echo(arpeggio(transpose(X,-7) ) ,4,6) ,4) |(transpose(transpose((shuffle(X) +transpose((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) ) ,-7) ,4) |transpose(transpose((X|X) ,-5) ,-5) ) ) ,12) ) +transpose(transpose(step((transpose(transpose(shuffle(transpose((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) ) ,-7) ,-7) +transpose(transpose((step((X+X) ,12) |transpose(step(((echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) +transpose(((X+transpose(X,12) ) +X) ,4) ) +transpose((X|X) ,7) ) ,12) ,-5) ) ,-7) ,7) ) ,12) ,-5) ,12) ) ,7) ) ,-5) ) |(transpose(transpose(arpeggio(transpose(((((X|X) +transpose((X+transpose(X,12) ) ,7) ) +step((X+transpose(X,7) ) ,12) ) +(transpose(transpose(X,-5) ,-7) +echo(transpose(transpose(X,-5) ,4) ,4,6) ) ) ,-5) ) ,4) ,4) |transpose(echo(transpose(transpose(transpose(transpose(transpose(X,-5) ,-5) ,4) ,-5) ,4) ,4,6) ,-7) ) ) +(arpeggio(transpose(transpose(echo(transpose((echo(((transpose(X,4) +transpose((X+X) ,12) ) +transpose(echo((X+transpose(X,12) ) ,4,6) ,12) ) ,4,6) +transpose(((echo((shuffle(step(X,12) ) +X) ,4,6) +transpose(((transpose(X,4) |(((X+transpose(X,12) ) +transpose(transpose(X,-7) ,4) ) +transpose((X+X) ,7) ) ) +transpose(((transpose(step(X,12) ,-5) +transpose(transpose((X+X) ,-7) ,4) ) +transpose((X|X) ,7) ) ,12) ) ,4) ) +transpose(transpose(echo(X,4,6) ,4) ,7) ) ,7) ) ,4) ,4,6) ,-5) ,4) ) +echo((transpose((shuffle(transpose(transpose(shuffle(transpose((X+transpose(transpose(X,4) ,12) ) ,4) ) ,4) ,-5) ) +transpose((arpeggio((shuffle(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) ) +transpose((transpose(transpose((X|X) ,-5) ,-7) |transpose((X|X) ,4) ) ,-5) ) ,12) ) ,-5) +transpose(transpose((transpose(transpose(echo(transpose((echo(X,4,6) +(transpose(X,4) |transpose(X,-5) ) ) ,-7) ,4,6) ,-7) ,4) +transpose(((echo((transpose((transpose(transpose(step((X+transpose(X,12) ) ,12) ,-5) ,-7) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,-5) ) ,7) ) ,4) +transpose(step(transpose(X,-7) ,12) ,4) ) ,4,6) +(transpose(((transpose(X,-5) |(transpose(X,-7) |transpose(step(echo(X,4,6) ,12) ,-7) ) ) +((transpose(X,4) +transpose((X+transpose((X+X) ,7) ) ,4) ) +transpose(X,7) ) ) ,4) |transpose(step(transpose((transpose((X+transpose(X,12) ) ,4) +transpose(((step(X,12) +transpose((X|X) ,7) ) |(transpose(X,4) +transpose(transpose(X,-7) ,12) ) ) ,-7) ) ,-5) ,12) ,-7) ) ) |shuffle(((shuffle(transpose(X,4) ) +(step(X,12) +(transpose((((X+transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,-5) +transpose(transpose(transpose(X,-7) ,-7) ,12) ) ) ) |transpose(transpose(step(((X+transpose(X,12) ) |X) ,12) ,-5) ,-7) ) ) ) ,12) ) ,-5) ,7) ) ,4,6) ) ) +transpose((shuffle(shuffle((transpose(transpose(shuffle((X|X) ) ,4) ,4) |((((transpose(transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) |(transpose(X,-5) +transpose((X+(X|X) ) ,12) ) ) ,-5) ,-5) +transpose((transpose(((echo(X,4,6) +transpose(((X+transpose(X,12) ) +X) ,7) ) +transpose((transpose(X,-7) +transpose((X+transpose((X+transpose(X,12) ) ,12) ) ,7) ) ,12) ) ,-5) |shuffle(transpose(X,4) ) ) ,4) ) +transpose(shuffle(transpose((X+echo(X,4,6) ) ,-7) ) ,7) ) +transpose(((transpose(transpose(shuffle(X) ,4) ,4) +transpose(((transpose(transpose(transpose(X,4) ,4) ,-7) +transpose(transpose(((X|X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) ,12) ) +transpose(((X+transpose(transpose(echo(X,4,6) ,-7) ,7) ) |((X+transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ) ,7) ) ,4) ) +transpose(transpose(((((arpeggio(X) +transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,-5) ,7) ) +transpose(((transpose(X,4) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,12) ) +transpose(((X|X) |transpose(X,4) ) ,12) ) ,4) ,7) ) ,7) ) |((((transpose(shuffle(X) ,4) +transpose(shuffle(transpose(X,4) ) ,4) ) +transpose(transpose((transpose((X+transpose((X|X) ,12) ) ,-5) +transpose(transpose(arpeggio(shuffle(X) ) ,4) ,12) ) ,-7) ,7) ) +transpose(transpose((transpose(echo((X+(X+X) ) ,4,6) ,-5) |((X+X) +transpose(X,7) ) ) ,-5) ,4) ) +transpose(((transpose(((X+transpose(X,7) ) +transpose(X,-7) ) ,-7) +transpose((((transpose(X,-7) +transpose(arpeggio(X) ,-7) ) +transpose(step(X,12) ,4) ) +transpose(step(transpose(X,-5) ,12) ,7) ) ,4) ) |(shuffle(X) +echo(X,4,6) ) ) ,7) ) ) ) ) ) |(transpose(((((transpose(X,-5) |shuffle(X) ) +transpose(transpose(X,4) ,-5) ) +transpose(transpose(X,4) ,-5) ) |echo(step((X+transpose(X,12) ) ,12) ,4,6) ) ,4) |(shuffle(transpose(shuffle(((((((step(X,12) |(X+transpose(X,12) ) ) +((X|X) +transpose(X,4) ) ) +transpose(transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose((X|X) ,7) ) ,-7) ,4) ) +transpose((((X|X) +transpose(X,4) ) +transpose((X+X) ,7) ) ,7) ) +transpose((X+transpose((transpose(X,-5) +transpose(transpose(X,-5) ,12) ) ,7) ) ,4) ) +transpose(transpose((transpose(X,4) +transpose(step((X|X) ,12) ,12) ) ,-5) ,7) ) ) ,-7) ) |transpose(echo(shuffle((step(transpose(echo(X,4,6) ,-5) ,12) +transpose(X,-5) ) ) ,4,6) ,-7) ) ) ) ,-5) ) ,7) )
random seed used was 248114248

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