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(shuffle(((transpose(transpose(((((transpose(transpose(X,-7) ,-5) +transpose((transpose(X,-5) +transpose(X,4) ) ,4) ) +transpose(X,7) ) +transpose(transpose((echo((echo(X,4,6) +transpose(((arpeggio(X) |X) |echo(X,4,6) ) ,12) ) ,4,6) +transpose((arpeggio(X) |(X+X) ) ,7) ) ,-7) ,12) ) |((arpeggio((X|echo(X,4,6) ) ) +transpose(transpose(arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) |(X+X) ) ) ,-5) ,7) ) +(((transpose((((X|X) +arpeggio(X) ) |(X|transpose((X+transpose(X,7) ) ,-5) ) ) ,-5) +transpose(shuffle((transpose(arpeggio(transpose(X,4) ) ,4) +(transpose(X,4) +transpose(transpose(echo(transpose(X,-7) ,4,6) ,4) ,7) ) ) ) ,4) ) +transpose(transpose((transpose(X,-5) +transpose((X+transpose(X,7) ) ,12) ) ,-5) ,7) ) +transpose((((transpose(X,-7) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose((step(transpose(X,4) ,12) +transpose((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ) ) ) ,4) ,4) +transpose(step((((transpose(step(transpose(transpose(step(X,12) ,-7) ,-5) ,12) ,-5) +transpose((arpeggio(echo((step(transpose(transpose(step(X,12) ,4) ,-5) ,12) +arpeggio(((X+transpose(X,12) ) +transpose(step(echo(X,4,6) ,12) ,7) ) ) ) ,4,6) ) +(((echo(transpose(X,4) ,4,6) +transpose(step(transpose((X+transpose(shuffle((X+X) ) ,12) ) ,-7) ,12) ,4) ) +transpose(transpose(transpose(transpose(echo((X+X) ,4,6) ,-7) ,-5) ,4) ,7) ) |shuffle(shuffle((X+transpose(X,7) ) ) ) ) ) ,4) ) +transpose((transpose(((transpose(X,-5) +transpose((((X|X) |X) |X) ,4) ) +transpose(shuffle(transpose((X|X) ,4) ) ,7) ) ,-7) +(shuffle(transpose(X,4) ) +(echo(X,4,6) +transpose(transpose(X,-5) ,7) ) ) ) ,7) ) |(((shuffle((X+transpose((X+X) ,12) ) ) |((shuffle(X) +transpose(shuffle(((arpeggio(X) |transpose((echo(X,4,6) +transpose(X,-5) ) ,4) ) +((X|X) |(X+X) ) ) ) ,4) ) +transpose((shuffle(((X|X) +echo(X,4,6) ) ) +transpose((shuffle(X) |(X+X) ) ,12) ) ,7) ) ) |(((((((X+transpose(X,12) ) +transpose((X+X) ,12) ) +transpose(((transpose((X|transpose(X,-7) ) ,-5) +transpose(((transpose(X,-7) +transpose(transpose(X,-7) ,7) ) |echo(transpose(X,4) ,4,6) ) ,4) ) +transpose((((step(X,12) +(X+X) ) +transpose(((X|X) +transpose(X,-5) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) ,4) ) +transpose(echo(step(X,12) ,4,6) ,7) ) +(transpose((X+transpose(X,-5) ) ,-5) +arpeggio(X) ) ) |((((transpose(X,-7) |X) +transpose(step((X+transpose(X,7) ) ,12) ,4) ) +transpose(transpose(X,-7) ,7) ) +((arpeggio(echo(step(X,12) ,4,6) ) +transpose(echo(transpose(X,-7) ,4,6) ,4) ) +transpose(shuffle((X+(X+transpose(X,7) ) ) ) ,7) ) ) ) +transpose((transpose(echo(echo((X|X) ,4,6) ,4,6) ,-5) |echo(transpose((X+X) ,4) ,4,6) ) ,-5) ) ) +transpose(echo(((echo((shuffle((X+X) ) +transpose(shuffle((X+transpose(X,12) ) ) ,7) ) ,4,6) +transpose(((shuffle(transpose(X,-5) ) +transpose((transpose((X|X) ,-5) +transpose((step(X,12) |transpose(X,-7) ) ,12) ) ,4) ) +transpose((shuffle(transpose(X,-7) ) +transpose(transpose(transpose(X,4) ,4) ,12) ) ,7) ) ,4) ) +transpose(((shuffle((X+transpose(X,12) ) ) +transpose(transpose((echo(X,4,6) +X) ,-5) ,7) ) +transpose(transpose(transpose(shuffle((X|X) ) ,4) ,-7) ,12) ) ,7) ) ,4,6) ,12) ) ) ,12) ,4) ) +transpose((transpose(step(transpose((transpose((X+X) ,-7) |shuffle(transpose((X|X) ,-5) ) ) ,-7) ,12) ,-5) +step(transpose((transpose(X,-7) +transpose(arpeggio(X) ,7) ) ,-5) ,12) ) ,7) ) ) ,4) +transpose((((((((transpose(transpose((X|transpose(transpose(X,-7) ,4) ) ,-5) ,-5) +transpose(arpeggio(arpeggio((echo(X,4,6) +transpose((X|X) ,12) ) ) ) ,12) ) +transpose(((((((transpose(X,4) |transpose(X,4) ) +((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) +X) |(transpose((X+transpose(X,12) ) ,4) +(X|X) ) ) |(shuffle((transpose(((X+transpose(X,7) ) +arpeggio(X) ) ,4) |(((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X|transpose(X,4) ) ,12) ) ) ) +transpose(((step(X,12) +(transpose(((X|X) +transpose(arpeggio(X) ,12) ) ,-5) |(X|(X+transpose(X,12) ) ) ) ) +transpose((echo(transpose(X,-5) ,4,6) +transpose(transpose((X|X) ,4) ,7) ) ,7) ) ,12) ) ) |((shuffle(X) |transpose(transpose(X,-7) ,4) ) |shuffle(transpose(X,-7) ) ) ) ,12) ) |transpose(transpose(((transpose((((X+transpose((X+transpose(X,7) ) ,12) ) +transpose(transpose(transpose(arpeggio(X) ,-5) ,-5) ,12) ) +transpose((transpose(transpose(X,4) ,-5) |(step(X,12) +transpose(transpose(X,-5) ,12) ) ) ,7) ) ,-5) +transpose(step((arpeggio((X|(X+X) ) ) +(shuffle((transpose(X,4) +transpose(X,7) ) ) +transpose(transpose((X+X) ,4) ,7) ) ) ,12) ,4) ) +transpose((((transpose(X,4) +transpose((transpose(X,-5) +X) ,12) ) +transpose(((X+transpose(transpose(X,-7) ,12) ) +transpose(transpose((X+echo(X,4,6) ) ,-5) ,7) ) ,4) ) +transpose(transpose(transpose(X,4) ,-5) ,7) ) ,7) ) ,4) ,4) ) +transpose(((transpose(transpose((X+(X+transpose(X,7) ) ) ,-5) ,-5) +((X+transpose(echo(X,4,6) ,12) ) +transpose((X|arpeggio(X) ) ,7) ) ) |echo(transpose(((transpose(X,-5) +transpose(shuffle(X) ,7) ) |((X+transpose(X,7) ) +transpose(shuffle(X) ,12) ) ) ,-7) ,4,6) ) ,-7) ) +transpose(arpeggio((transpose(transpose(shuffle(shuffle(transpose(X,-5) ) ) ,4) ,-5) +arpeggio(transpose((transpose(X,-5) |(transpose(transpose(transpose(X,-7) ,-5) ,-5) |transpose(transpose(X,-7) ,-7) ) ) ,4) ) ) ) ,4) ) +transpose(transpose(shuffle(((((arpeggio((transpose(echo(transpose(transpose((X+X) ,-5) ,4) ,4,6) ,-5) +transpose(shuffle((step((arpeggio(X) +transpose(transpose(X,-7) ,12) ) ,12) +transpose(((X|X) +transpose(X,-5) ) ,7) ) ) ,-5) ) ) +step(((transpose((X|(X+transpose(X,12) ) ) ,4) +transpose(shuffle(X) ,-5) ) |transpose(transpose((echo(X,4,6) +transpose(X,4) ) ,-7) ,-7) ) ,12) ) |((((transpose(transpose(echo(X,4,6) ,4) ,-7) |transpose(transpose((X+X) ,-5) ,-5) ) +(shuffle(echo(transpose((X|X) ,-7) ,4,6) ) +transpose((X+transpose(X,12) ) ,12) ) ) +transpose((transpose(((transpose(X,4) |transpose(X,4) ) +transpose((transpose(X,4) |X) ,7) ) ,4) +transpose(transpose(step((transpose(transpose(X,-5) ,-5) +transpose(transpose(X,4) ,12) ) ,12) ,4) ,12) ) ,12) ) |(((((((X+transpose(X,4) ) +transpose(X,7) ) |(transpose(echo(transpose(X,4) ,4,6) ,-5) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) ) |transpose(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +transpose((X|X) ,12) ) +transpose(((((arpeggio(X) +transpose(X,-7) ) +transpose(transpose(transpose(X,4) ,4) ,4) ) +transpose(transpose(X,-5) ,7) ) +transpose(arpeggio(X) ,4) ) ,12) ) ,4) ) +transpose(transpose(step(X,12) ,-5) ,4) ) +transpose(((((X+transpose(X,7) ) +(transpose((X+transpose(X,7) ) ,-7) |(X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ) +transpose(transpose(X,-5) ,4) ) +(echo(((X+transpose(X,12) ) +(X+X) ) ,4,6) +transpose(X,4) ) ) ,7) ) +transpose(transpose(arpeggio(((transpose(step(X,12) ,-5) +transpose(echo(X,4,6) ,7) ) |arpeggio(X) ) ) ,4) ,12) ) ) ) +transpose(shuffle((step(transpose(step(X,12) ,-7) ,12) |transpose(((transpose(X,4) +transpose((transpose(X,-7) |(X|X) ) ,4) ) +transpose(step(transpose(X,-5) ,12) ,7) ) ,-7) ) ) ,4) ) +transpose((((((shuffle(X) +transpose(arpeggio(shuffle(arpeggio(step((X+X) ,12) ) ) ) ,4) ) +transpose(transpose(arpeggio((transpose(transpose(X,-5) ,4) +transpose(((X|(X|X) ) +transpose(transpose(X,-7) ,-5) ) ,7) ) ) ,-7) ,7) ) +transpose(transpose((shuffle(arpeggio(transpose((X+transpose(X,12) ) ,-7) ) ) +(((step(echo(echo(X,4,6) ,4,6) ,12) +transpose(((X|X) +transpose(X,12) ) ,7) ) +transpose(echo(transpose(X,-7) ,4,6) ,4) ) +transpose((transpose((X|X) ,-5) +transpose(((transpose(X,-5) +transpose(X,4) ) +transpose(X,7) ) ,12) ) ,7) ) ) ,-7) ,4) ) +transpose((transpose((transpose(transpose((((transpose(X,-5) |transpose(X,-5) ) +transpose((shuffle(X) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(((X+transpose(X,12) ) |step(X,12) ) ,7) ) ,4) ,-7) +transpose((transpose(transpose(((shuffle((X+transpose(X,7) ) ) +transpose((X|transpose(X,-5) ) ,4) ) +transpose((X|X) ,7) ) ,-5) ,4) +(X+transpose(transpose(((X+X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) ,12) ) ) ,12) ) ,-7) |(transpose(((transpose(X,-5) |transpose(echo((X|X) ,4,6) ,-5) ) +transpose(transpose(X,-5) ,7) ) ,4) +(arpeggio(arpeggio(transpose(X,-7) ) ) |(arpeggio(((step(X,12) +transpose(X,7) ) +transpose(echo(X,4,6) ,12) ) ) +shuffle(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) ) ) ) ) ,7) ) +transpose(transpose(transpose((echo((transpose(X,4) +transpose(transpose(X,-7) ,12) ) ,4,6) +transpose(((transpose((shuffle(echo(X,4,6) ) |shuffle(X) ) ,-7) +shuffle(transpose(X,4) ) ) +transpose((transpose(echo(transpose(X,-7) ,4,6) ,4) +transpose(transpose(transpose(X,-7) ,4) ,7) ) ,12) ) ,12) ) ,4) ,-5) ,7) ) ,7) ) ) ,-5) ,7) ) |(echo(echo((transpose((transpose(shuffle(X) ,-7) |(transpose(X,4) +transpose((arpeggio(X) |X) ,-5) ) ) ,4) |echo((X|shuffle(echo(X,4,6) ) ) ,4,6) ) ,4,6) ,4,6) +transpose(((((X+transpose(step((transpose(echo(X,4,6) ,-5) |((X|X) |(X|X) ) ) ,12) ,4) ) +transpose((((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose((X+X) ,4) ,7) ) |(echo(X,4,6) |(X+X) ) ) ,7) ) +transpose(transpose(((transpose((transpose(X,-5) +X) ,-5) +(transpose(transpose(echo(echo(X,4,6) ,4,6) ,4) ,-5) |transpose((step(X,12) +(transpose(X,-7) +X) ) ,-7) ) ) |step((transpose(arpeggio(transpose(X,4) ) ,4) |step(transpose(arpeggio((X|X) ) ,-5) ,12) ) ,12) ) ,4) ,4) ) +transpose(((transpose((shuffle(shuffle(shuffle(echo((X|echo(X,4,6) ) ,4,6) ) ) ) |((transpose((transpose((X+X) ,4) |step((((X|X) |X) +transpose(X,7) ) ,12) ) ,-5) +((X+transpose(X,12) ) |((transpose(step(shuffle(X) ,12) ,-5) +transpose(step(transpose(X,-7) ,12) ,7) ) +((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +transpose(transpose(X,-5) ,4) ) |((X+X) +transpose(X,7) ) ) ) ) ) +transpose(echo((transpose(X,4) +transpose(X,7) ) ,4,6) ,7) ) ) ,-7) |transpose(arpeggio((((transpose((shuffle(X) +((X+X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,-7) |transpose(echo(transpose(step(X,12) ,4) ,4,6) ,4) ) |transpose(((X+X) |(((X+transpose(transpose(X,4) ,12) ) +transpose(transpose(X,4) ,4) ) +transpose(transpose(transpose(X,-5) ,-7) ,7) ) ) ,-5) ) +transpose(transpose(transpose(step(transpose((X+transpose((X+X) ,12) ) ,-5) ,12) ,-5) ,-5) ,7) ) ) ,-7) ) +(((transpose(transpose(((arpeggio(X) +transpose(arpeggio(X) ,4) ) +transpose((X+X) ,7) ) ,-7) ,-7) +transpose(((transpose((X|X) ,-7) +transpose(transpose(X,-7) ,-7) ) |echo(transpose(step(((X+transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ,4) ,4,6) ) ,4) ) +transpose(((transpose(transpose(X,4) ,4) |transpose(shuffle(X) ,-5) ) +shuffle((X|X) ) ) ,7) ) +transpose(((arpeggio(shuffle(arpeggio(X) ) ) |(transpose(echo(echo(X,4,6) ,4,6) ,-5) +(((shuffle((X+X) ) |transpose(X,-5) ) +transpose(echo(X,4,6) ,12) ) |transpose(transpose(arpeggio(X) ,-5) ,4) ) ) ) |transpose(((X+transpose(transpose(X,-5) ,7) ) |((X+X) +transpose((step(arpeggio(X) ,12) |((X+transpose(X,7) ) |arpeggio(X) ) ) ,7) ) ) ,4) ) ,7) ) ) ,7) ) ,7) ) ) ,7) ) |(arpeggio(((((transpose((((X|X) +transpose(shuffle(echo(X,4,6) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +X) ,7) ) ,-7) |((X+((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(step(arpeggio((X+transpose(X,7) ) ) ,12) ,12) ) ) +transpose((echo((step(((X+X) +transpose(X,4) ) ,12) |transpose(((arpeggio(X) +transpose(shuffle(X) ,4) ) +transpose((X+X) ,7) ) ,-7) ) ,4,6) +transpose((step(X,12) +transpose(echo((X+(X|X) ) ,4,6) ,7) ) ,12) ) ,4) ) +transpose((transpose(((((transpose(transpose(X,4) ,-7) +transpose((X+transpose((X+transpose(X,12) ) ,12) ) ,4) ) +transpose(transpose(((X|(X+transpose(X,7) ) ) +transpose((transpose(X,4) +transpose(echo(X,4,6) ,7) ) ,7) ) ,4) ,7) ) +transpose((arpeggio(((echo(arpeggio(X) ,4,6) +transpose((transpose(X,-5) |((transpose(X,-5) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ,4) ) +transpose(((transpose(X,-5) +X) |transpose((X+shuffle(X) ) ,-5) ) ,7) ) ) +transpose(((((X+(X+X) ) +transpose((X+X) ,12) ) +transpose(shuffle((transpose(X,-7) +X) ) ,12) ) +(transpose((((X+X) +transpose(transpose(X,4) ,4) ) +transpose(arpeggio(X) ,7) ) ,-5) +transpose(X,-7) ) ) ,7) ) ,4) ) +transpose(arpeggio((((transpose(step(X,12) ,-7) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) |shuffle((X+transpose(X,7) ) ) ) +transpose(X,-7) ) ) ,7) ) ,4) +transpose(transpose(transpose(transpose(step(((((((X+transpose(X,4) ) +transpose(X,7) ) +(X+X) ) |transpose(X,4) ) +transpose(arpeggio(transpose((X+transpose(transpose(X,4) ,7) ) ,4) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,12) ,4) ,4) ,-5) ,7) ) ,4) ) +transpose(transpose(echo((transpose((X|X) ,-5) +transpose((((X+transpose(X,12) ) +transpose(X,7) ) +(X|transpose(transpose(shuffle(X) ,4) ,-5) ) ) ,7) ) ,4,6) ,-7) ,7) ) ) +transpose(shuffle(((((((((((shuffle((X|X) ) +shuffle(X) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |(X|X) ) ,4) ) +transpose(step(arpeggio((X+transpose(X,7) ) ) ,12) ,7) ) +transpose(shuffle(echo((echo(X,4,6) |arpeggio(X) ) ,4,6) ) ,4) ) +transpose(step((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ,7) ) |transpose(((transpose(X,-5) |transpose(X,-5) ) +transpose((transpose(transpose(X,-5) ,4) +transpose(transpose(transpose(X,-7) ,-5) ,7) ) ,12) ) ,-7) ) |transpose(transpose(transpose(((X+transpose(X,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ,-7) ,-7) ) +transpose(echo((((X+X) |X) +transpose(transpose(transpose(X,-5) ,4) ,12) ) ,4,6) ,7) ) +transpose((transpose(step((echo((transpose(X,4) |(((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,-5) ) ) ,4,6) +transpose(arpeggio(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,-5) ) ,12) ) ,12) ,-7) +(((transpose(arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,12) ) ) ,4) |transpose(transpose((X|X) ,-5) ,-7) ) +transpose(transpose(transpose(X,4) ,-5) ,4) ) +(step((transpose(X,-5) +transpose((X+transpose(X,-5) ) ,12) ) ,12) |(step((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) +transpose(step(X,12) ,7) ) ,12) |X) ) ) ) ,12) ) +transpose((transpose(shuffle(step(transpose(transpose(shuffle(X) ,-5) ,-5) ,12) ) ,-5) +transpose(arpeggio((((((transpose(transpose(transpose((X+X) ,-7) ,-5) ,-7) +transpose(X,4) ) |arpeggio((shuffle((X+X) ) +transpose(shuffle(X) ,4) ) ) ) +(((echo(((transpose((X+transpose(X,12) ) ,-7) +transpose(((X+transpose(arpeggio(X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,4) ) +transpose((X|X) ,7) ) ,4,6) +transpose((echo(X,4,6) +transpose((X+X) ,-7) ) ,7) ) +transpose((shuffle(((X+transpose(X,12) ) +transpose(transpose(X,-7) ,7) ) ) |(((((X+transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) |echo(X,4,6) ) +transpose(echo(((transpose(X,4) +transpose(shuffle(X) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4,6) ,12) ) +echo(arpeggio((arpeggio(X) +(X+transpose(X,7) ) ) ) ,4,6) ) ) ,4) ) +transpose((((transpose(X,-7) +((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,-7) ) +arpeggio(X) ) ) +transpose(((X+transpose((X+transpose(X,12) ) ,12) ) |((X+transpose(X,7) ) +transpose(X,-7) ) ) ,12) ) |arpeggio(arpeggio(transpose((X|(X+X) ) ,-7) ) ) ) ,7) ) ) +(transpose((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +(((X+X) +transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) ,-5) |(echo((X+(X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ,4,6) +((shuffle(X) |X) +transpose((transpose((X|X) ,-7) |X) ,7) ) ) ) ) |transpose(echo(echo((echo(((transpose(X,-7) +transpose(X,7) ) +echo(shuffle(X) ,4,6) ) ,4,6) +transpose((transpose(shuffle(X) ,4) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ,4,6) ,4,6) ,4) ) ) ,12) ) ,12) ) ) ,-5) ) ) +transpose((((transpose((transpose((transpose((((((X+X) +transpose(X,-5) ) +transpose(X,12) ) +transpose(transpose((X+transpose(X,7) ) ,-7) ,4) ) +transpose(transpose(((X+transpose(X,7) ) +X) ,-5) ,7) ) ,4) +(transpose((echo((X+X) ,4,6) |X) ,4) |((arpeggio(arpeggio(transpose(X,-5) ) ) +((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio(X) ,12) ) +transpose((X|X) ,-7) ) ) |(arpeggio((echo(X,4,6) +transpose(((X|X) +transpose(X,12) ) ,12) ) ) |echo(transpose((X|X) ,4) ,4,6) ) ) ) ) ,-5) +transpose(shuffle((echo(transpose((shuffle((X+transpose(step(X,12) ,12) ) ) +transpose(transpose(X,-7) ,12) ) ,4) ,4,6) +transpose(transpose(transpose(X,4) ,4) ,-5) ) ) ,12) ) ,4) |shuffle(((transpose((arpeggio(X) +transpose(step((X|X) ,12) ,7) ) ,4) +transpose((((transpose(transpose(X,4) ,4) |((X+X) +echo(X,4,6) ) ) +transpose((((arpeggio((X|X) ) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose(transpose((X|X) ,-7) ,7) ) |((transpose(X,-5) |transpose(X,4) ) |shuffle((X+transpose(X,12) ) ) ) ) ,4) ) +transpose(arpeggio(((X+X) |shuffle(X) ) ) ,7) ) ,7) ) +transpose(((((X+transpose((X|(X+X) ) ,4) ) +transpose((X+X) ,7) ) +transpose(transpose(echo(transpose(arpeggio((X+X) ) ,4) ,4,6) ,-7) ,7) ) |(((transpose(transpose(transpose(X,4) ,-7) ,4) +arpeggio((X|arpeggio(X) ) ) ) +transpose(echo(((X|X) |((X+X) +transpose(X,7) ) ) ,4,6) ,7) ) +((transpose(transpose(((transpose(X,4) |X) |transpose(X,-7) ) ,4) ,-7) +transpose(echo((arpeggio((X|X) ) |(X+(X|X) ) ) ,4,6) ,4) ) +transpose((transpose(shuffle(transpose(X,-7) ) ,4) +transpose(step(((transpose((X+transpose(X,12) ) ,-5) |transpose(transpose(X,4) ,4) ) +transpose(transpose(X,4) ,4) ) ,12) ,12) ) ,7) ) ) ) ,12) ) ) ) +transpose(transpose(arpeggio(((((transpose(X,-5) |X) +transpose((X+transpose(X,12) ) ,7) ) +transpose(transpose(arpeggio(((X|X) +transpose((X+X) ,-7) ) ) ,4) ,12) ) |transpose(step(echo(shuffle(transpose((X|X) ,-7) ) ,4,6) ,12) ,-7) ) ) ,-5) ,-7) ) +transpose(step(transpose((shuffle(echo((echo(step((transpose((((X+X) +transpose((step(X,12) |X) ,4) ) +transpose((X+X) ,7) ) ,4) |transpose(echo(X,4,6) ,4) ) ,12) ,4,6) |(arpeggio(transpose((transpose((X|X) ,4) +transpose(step((X+X) ,12) ,7) ) ,-7) ) +transpose(echo((transpose(((X+X) |((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ) ,-5) |(transpose((X|X) ,-5) +transpose(echo(transpose(X,-7) ,4,6) ,7) ) ) ,4,6) ,12) ) ) ,4,6) ) +(echo((transpose((transpose(X,4) |step(X,12) ) ,-5) +transpose((transpose(transpose(transpose((((X+X) +transpose((X+X) ,7) ) +transpose(echo(X,4,6) ,12) ) ,4) ,-5) ,-7) +(shuffle((((X|X) +transpose(((X+transpose(X,7) ) +X) ,4) ) +transpose(X,7) ) ) +transpose((((X|X) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,7) ) ) ,12) ) ,4,6) +transpose((step((shuffle(transpose((X+transpose(transpose(X,-5) ,7) ) ,4) ) +(shuffle(((X|X) +transpose(X,-5) ) ) |(step(echo(X,4,6) ,12) +transpose(step(X,12) ,12) ) ) ) ,12) +(((step((transpose((arpeggio(X) +transpose((transpose(X,-7) |transpose(X,-5) ) ,12) ) ,-5) |echo((arpeggio(X) +step(X,12) ) ,4,6) ) ,12) +transpose(((transpose(X,-7) +transpose(shuffle(X) ,12) ) +transpose(transpose(transpose(transpose(X,-5) ,-5) ,4) ,7) ) ,12) ) +transpose(transpose(((transpose((X+transpose(X,7) ) ,-5) |step(echo(X,4,6) ,12) ) +arpeggio((X+transpose((X+transpose(X,12) ) ,12) ) ) ) ,-5) ,4) ) +transpose((transpose(transpose(step(X,12) ,-5) ,-5) +(transpose(step(shuffle(X) ,12) ,-5) +transpose(echo((transpose(X,-7) +transpose(step(echo(X,4,6) ,12) ,12) ) ,4,6) ,7) ) ) ,7) ) ) ,7) ) ) ,-5) ,12) ,7) ) ,7) )
random seed used was 24351347

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