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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Phrase for X:
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After 20 generations the expression "X" became this:
(echo(((step(shuffle(((transpose(transpose((shuffle(step((X+transpose(X,7) ) ,12) ) +transpose(step(transpose(transpose((X+transpose(X,7) ) ,-7) ,-7) ,12) ,12) ) ,4) ,-5) +transpose(arpeggio(echo(step((step((arpeggio(echo(transpose(X,4) ,4,6) ) +transpose(transpose((X|X) ,-7) ,7) ) ,12) +transpose(transpose((X+X) ,-7) ,12) ) ,12) ,4,6) ) ,4) ) +transpose(echo(echo(((((X+transpose(X,12) ) +transpose(X,-7) ) +arpeggio(transpose(transpose((X+transpose(X,12) ) ,-7) ,4) ) ) +transpose(arpeggio(step((X+X) ,12) ) ,7) ) ,4,6) ,4,6) ,7) ) ) ,12) +transpose(echo((step(transpose(echo(shuffle(transpose(X,-7) ) ,4,6) ,-5) ,12) +transpose((shuffle(step((((transpose(((X+transpose(X,12) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) +transpose(transpose(shuffle((X+transpose(X,-5) ) ) ,-7) ,4) ) +transpose(echo(((X+X) |arpeggio(X) ) ,4,6) ,7) ) |transpose(step(step(echo(transpose(X,-5) ,4,6) ,12) ,12) ,-7) ) ,12) ) +transpose(transpose(step(transpose((shuffle(arpeggio(echo(transpose(X,-5) ,4,6) ) ) +transpose((((((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(step(X,12) ,7) ) +transpose(((arpeggio((X+transpose(X,12) ) ) +transpose(((X+X) +X) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) +echo(X,4,6) ) +transpose(transpose(arpeggio(step(X,12) ) ,-5) ,7) ) ,7) ) ,-5) ,12) ,-7) ,12) ) ,7) ) ,4,6) ,7) ) +transpose(transpose(transpose(shuffle((((((echo(transpose(echo(transpose(X,-5) ,4,6) ,-5) ,4,6) |(arpeggio(shuffle(step(transpose(shuffle(X) ,-5) ,12) ) ) |arpeggio((arpeggio(((X+X) +transpose((X+transpose(X,7) ) ,7) ) ) +transpose(shuffle(transpose(X,-5) ) ,12) ) ) ) ) +transpose(transpose((transpose(shuffle((X+transpose(((X|X) +X) ,12) ) ) ,-7) +transpose(transpose(echo((shuffle(transpose((X|X) ,-5) ) +transpose(transpose(step(step(transpose(X,-7) ,12) ,12) ,-7) ,7) ) ,4,6) ,-5) ,7) ) ,-7) ,4) ) +transpose(transpose(transpose(transpose(echo((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose((transpose(X,4) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) ,12) ) ,4,6) ,-7) ,-5) ,-5) ,7) ) +transpose((transpose(transpose((((transpose(X,-7) +transpose(arpeggio(((transpose(X,4) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X|X) ,7) ) ) ,4) ) +transpose(transpose((shuffle(X) +transpose(shuffle(X) ,12) ) ,-5) ,7) ) +transpose((transpose(transpose(X,-7) ,4) +transpose(((transpose((X+transpose(transpose(X,4) ,12) ) ,-5) +(echo(X,4,6) +transpose(X,-5) ) ) +((X+transpose(X,7) ) +transpose(echo(X,4,6) ,12) ) ) ,12) ) ,7) ) ,4) ,-5) +(transpose(((transpose(X,-5) +transpose(transpose(transpose(X,-7) ,-7) ,12) ) +transpose((transpose(step(arpeggio(X) ,12) ,4) +transpose(transpose(step((X+transpose(X,7) ) ,12) ,-5) ,7) ) ,-5) ) ,-5) |echo(transpose((arpeggio(transpose(X,-5) ) +transpose(transpose(transpose(X,-7) ,-5) ,12) ) ,-7) ,4,6) ) ) ,12) ) +transpose(transpose(transpose((((X+transpose(X,7) ) +transpose(((X+transpose((X+transpose(X,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,-5) ) +step((transpose(((transpose(X,-5) +transpose(arpeggio(transpose(X,-7) ) ,4) ) +transpose(step(X,12) ,7) ) ,-5) |(echo(transpose(echo(X,4,6) ,-7) ,4,6) +transpose(arpeggio(((X+transpose(X,7) ) |(X+transpose(X,7) ) ) ) ,7) ) ) ,12) ) ,-7) ,-7) ,7) ) ) ,-5) ,-7) ,-7) ) ,4,6) +transpose(((transpose((shuffle(echo(step(transpose(echo(echo(((X+transpose(X,7) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ) ,4,6) ,4,6) ,-5) ,12) ,4,6) ) +(((((shuffle(shuffle(echo(arpeggio(shuffle(transpose(X,-7) ) ) ,4,6) ) ) +transpose((step((transpose(((transpose(step(X,12) ,-5) +transpose(X,4) ) +transpose(shuffle(echo(X,4,6) ) ,7) ) ,-7) |shuffle(((X+X) |transpose(shuffle(X) ,4) ) ) ) ,12) +transpose(((((X+transpose(X,12) ) +step(step(step(X,12) ,12) ,12) ) +transpose((transpose(shuffle(X) ,-7) |((X+transpose((X|X) ,4) ) +transpose(X,7) ) ) ,7) ) +transpose((echo((step(X,12) +transpose(transpose(X,-7) ,7) ) ,4,6) +transpose(((X+transpose(X,12) ) +transpose(arpeggio(X) ,12) ) ,7) ) ,12) ) ,7) ) ,4) ) +transpose(((echo(transpose(arpeggio(X) ,-5) ,4,6) +transpose(shuffle(transpose(((transpose(X,-5) |(X+transpose(X,7) ) ) +transpose(((step(X,12) +transpose((X|step(X,12) ) ,4) ) +transpose(transpose(transpose(X,-7) ,-7) ,7) ) ,7) ) ,-5) ) ,12) ) +transpose(transpose((((((((arpeggio((X+transpose(X,12) ) ) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose((((X+transpose(X,7) ) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,7) ) +transpose(transpose(echo(X,4,6) ,-7) ,7) ) |transpose(X,-5) ) +transpose((step(X,12) +transpose(shuffle((transpose(echo(X,4,6) ,-5) +transpose((X+transpose(X,12) ) ,12) ) ) ,7) ) ,7) ) +transpose(echo(((transpose((transpose(X,-5) |X) ,-7) +transpose(((arpeggio(shuffle(X) ) +transpose(((X+transpose(X,12) ) +transpose(echo(X,4,6) ,12) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,4) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ,4,6) ,4) ) +transpose(transpose((X|((transpose(X,-7) +transpose(X,7) ) +transpose(X,7) ) ) ,-5) ,7) ) ,4) ,12) ) ,7) ) +transpose(((((step(echo(echo((X+transpose(X,12) ) ,4,6) ,4,6) ,12) |(transpose((X+transpose(X,7) ) ,4) +transpose((((echo(X,4,6) |transpose((X+transpose(X,12) ) ,-5) ) +transpose((X+transpose(X,7) ) ,12) ) |step(((X+transpose(X,7) ) +transpose(X,12) ) ,12) ) ,7) ) ) |((((arpeggio((X+transpose(X,7) ) ) +transpose(transpose((X+transpose(X,7) ) ,-5) ,12) ) +transpose(transpose(transpose(X,-5) ,4) ,12) ) +transpose((step(transpose(X,-5) ,12) |transpose(step(X,12) ,-5) ) ,4) ) +transpose(transpose(echo(X,4,6) ,-7) ,7) ) ) |(transpose(transpose((X+((X+transpose(X,12) ) +transpose(transpose(X,-7) ,12) ) ) ,-5) ,-7) +transpose(transpose(arpeggio(transpose((((X+X) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,-7) ) ,-5) ,12) ) ) +step((step((transpose(((step(transpose(X,-7) ,12) +transpose(((X+X) |X) ,12) ) +transpose(shuffle(echo(X,4,6) ) ,12) ) ,-7) +transpose(transpose(transpose(transpose((X|X) ,-7) ,-5) ,4) ,12) ) ,12) +transpose(arpeggio(transpose(((transpose(step(X,12) ,-7) +transpose(((X+transpose(X,7) ) +(X|X) ) ,12) ) +transpose((arpeggio(X) +transpose(transpose((X|X) ,-7) ,12) ) ,12) ) ,4) ) ,12) ) ,12) ) ,4) ) +transpose(transpose(arpeggio(((((echo(transpose(((transpose(transpose((X+transpose(X,12) ) ,-7) ,4) +transpose((X+transpose(X,12) ) ,4) ) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,7) ) ,-7) ,4,6) +transpose((arpeggio(echo(arpeggio(X) ,4,6) ) +transpose(transpose(step(X,12) ,-5) ,7) ) ,4) ) +transpose(step(((echo(X,4,6) +transpose((transpose(X,-5) +transpose((X+transpose(X,12) ) ,12) ) ,4) ) +transpose(transpose((transpose(X,-7) +transpose(transpose(X,4) ,7) ) ,-5) ,7) ) ,12) ,7) ) +transpose(arpeggio(transpose((transpose(transpose(echo(X,4,6) ,-5) ,-7) +transpose(shuffle(((X+X) +transpose((X+transpose(X,7) ) ,7) ) ) ,7) ) ,-7) ) ,4) ) +transpose(((transpose((((X+transpose(X,12) ) +transpose(arpeggio(transpose(X,-5) ) ,4) ) +transpose((transpose(X,-7) +transpose(X,7) ) ,7) ) ,-5) +transpose(((transpose(X,-7) +transpose((((((X+transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) +transpose(step(X,12) ,4) ) +transpose(((X+transpose(X,7) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,4) ) +transpose(((shuffle(X) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,7) ) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) ) ,4) ,7) ) +transpose(transpose(transpose((shuffle((transpose(X,-5) +transpose((echo(transpose(X,-7) ,4,6) +transpose(arpeggio(echo(X,4,6) ) ,12) ) ,12) ) ) +transpose(transpose(transpose((X+transpose(arpeggio(X) ,7) ) ,-7) ,-5) ,12) ) ,-7) ,-7) ,7) ) ) ,-7) +(((transpose(echo(step(((transpose(transpose((((step((X+transpose((X+transpose((X+transpose(X,12) ) ,12) ) ,12) ) ,12) +transpose(shuffle((arpeggio(transpose(X,-7) ) +transpose(transpose((X+transpose(X,7) ) ,-5) ,12) ) ) ,12) ) +transpose(transpose(transpose(X,-7) ,-7) ,12) ) +transpose(step(shuffle((X|X) ) ,12) ,12) ) ,-5) ,-7) +transpose(step(arpeggio(((((arpeggio(echo(transpose((step((X|X) ,12) +transpose(X,7) ) ,-7) ,4,6) ) +transpose((arpeggio((shuffle(X) |transpose(X,4) ) ) |(arpeggio(X) |X) ) ,4) ) +transpose(step(transpose(X,-7) ,12) ,7) ) +transpose(transpose(transpose(arpeggio((shuffle(transpose(X,4) ) +transpose(shuffle(transpose((X+transpose(X,7) ) ,-5) ) ,7) ) ) ,-7) ,-5) ,4) ) +transpose(transpose(transpose(arpeggio(echo(X,4,6) ) ,-7) ,-5) ,7) ) ) ,12) ,4) ) +transpose(transpose((((echo(echo(((step(step(X,12) ,12) +transpose(X,12) ) +transpose(((X+transpose((X+transpose(X,7) ) ,12) ) +(step(X,12) +echo(X,4,6) ) ) ,7) ) ,4,6) ,4,6) +transpose(echo(transpose(arpeggio(X) ,-5) ,4,6) ,12) ) |(step(((transpose(X,-7) +((X+transpose(X,12) ) +transpose(X,-7) ) ) +transpose(transpose(step((X+X) ,12) ,4) ,7) ) ,12) +arpeggio(step(((transpose(X,-7) +X) +transpose(echo(transpose(X,-7) ,4,6) ,12) ) ,12) ) ) ) +step(transpose(((arpeggio(X) +transpose(step(arpeggio(arpeggio(X) ) ,12) ,4) ) +transpose(transpose(X,4) ,7) ) ,-7) ,12) ) ,-7) ,7) ) ,12) ,4,6) ,-5) +transpose(arpeggio(step((transpose(transpose((shuffle(X) +transpose(shuffle((X+transpose(arpeggio(X) ,7) ) ) ,12) ) ,-5) ,-7) |(((shuffle((echo((X+transpose(X,7) ) ,4,6) +(transpose(X,-5) +transpose(X,12) ) ) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,4) ) +transpose(step(((X|X) +transpose(step(X,12) ,12) ) ,12) ,7) ) +transpose(transpose((echo(arpeggio(X) ,4,6) +transpose(transpose(X,4) ,12) ) ,-5) ,7) ) ) ,12) ) ,4) ) +transpose(arpeggio(echo(((transpose(shuffle(((((echo((X+transpose(X,7) ) ,4,6) +transpose(arpeggio(X) ,12) ) +transpose(arpeggio(((transpose((X+transpose(X,12) ) ,-7) +transpose(((transpose(step(X,12) ,-5) +transpose(arpeggio(X) ,4) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ,4) ) +transpose(X,7) ) ) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(shuffle(transpose(X,-7) ) ,7) ) ,4) ) +transpose(arpeggio(((X+transpose(transpose(X,-7) ,7) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,7) ) ,12) ) ) ,7) ) ) ,-5) +transpose(transpose(step(arpeggio(shuffle((transpose(transpose(((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,-5) ,-7) |((X+transpose(X,12) ) +transpose(arpeggio((transpose(X,-5) +transpose(echo(X,4,6) ,7) ) ) ,12) ) ) ) ) ,12) ,4) ,4) ) +transpose(((transpose(transpose(echo(transpose(X,-7) ,4,6) ,-5) ,4) +transpose(step(transpose(X,4) ,12) ,7) ) |step((transpose(arpeggio(X) ,4) +transpose(transpose(X,-7) ,7) ) ,12) ) ,7) ) ,4,6) ) ,7) ) +transpose(echo((step(arpeggio(shuffle(step(transpose(((transpose(X,-5) +X) +transpose(arpeggio((transpose(X,-5) +transpose((transpose(X,-7) |X) ,7) ) ) ,7) ) ,-5) ,12) ) ) ,12) +transpose((((echo(step(X,12) ,4,6) |echo((echo(transpose(transpose(shuffle(X) ,4) ,-5) ,4,6) +transpose(transpose(echo((X+shuffle(X) ) ,4,6) ,4) ,12) ) ,4,6) ) +transpose(transpose(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) +transpose(transpose((X+X) ,-7) ,4) ) +transpose(((transpose(X,4) +X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,7) ) ,4) ,4) ) +transpose((((transpose(((X+transpose(X,7) ) +transpose(transpose(X,-7) ,7) ) ,-7) |transpose(transpose(X,-5) ,-7) ) +(X+transpose(X,12) ) ) |transpose(shuffle(X) ,-5) ) ,7) ) ,7) ) ,4,6) ,7) ) ) +transpose(arpeggio(arpeggio(((((transpose(step((transpose(((arpeggio(arpeggio(X) ) +transpose((echo(arpeggio(X) ,4,6) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(X,-7) ,7) ) ,7) ) ,4) ) +transpose(transpose((transpose((X+transpose(X,7) ) ,-5) +transpose(transpose(step(X,12) ,-5) ,12) ) ,-7) ,7) ) ,-7) +transpose((((step((X|shuffle(X) ) ,12) +transpose(transpose(arpeggio(X) ,4) ,12) ) +transpose((((((step(transpose(transpose(echo(X,4,6) ,-7) ,-5) ,12) |(arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,4) ,7) ) ) +transpose(X,7) ) ) +transpose(transpose(X,-7) ,4) ) +transpose(arpeggio(transpose(((((X+transpose(X,4) ) +transpose(X,7) ) |arpeggio(X) ) +((X|X) +transpose((X+transpose(X,12) ) ,7) ) ) ,4) ) ,7) ) +transpose((((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose(transpose(transpose(X,-7) ,-5) ,12) ) +transpose(transpose(transpose(X,-7) ,-7) ,12) ) +transpose(transpose(transpose(((((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) +transpose(echo(X,4,6) ,4) ) +transpose(transpose((X+X) ,-5) ,7) ) ,-5) ,-7) ,12) ) ,4) ) +transpose(((X+X) +(X+X) ) ,7) ) ,4) ) +transpose(transpose(((transpose(X,-7) +transpose(((X+transpose(X,12) ) +transpose(((X+transpose(X,7) ) +X) ,12) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ,-5) ,7) ) ,12) ) ,12) ,-5) +transpose(echo(echo(arpeggio(shuffle(transpose((shuffle(transpose(transpose(transpose(X,-5) ,-7) ,-5) ) +transpose(transpose(arpeggio((X+transpose(X,7) ) ) ,-7) ,12) ) ,-5) ) ) ,4,6) ,4,6) ,4) ) +transpose(arpeggio(transpose((((transpose(transpose(echo((arpeggio(((X+transpose(X,7) ) +transpose(transpose(X,-5) ,12) ) ) +transpose(shuffle(((X+transpose(X,7) ) +transpose(X,12) ) ) ,12) ) ,4,6) ,-7) ,-5) +transpose(transpose((((echo(transpose(X,-7) ,4,6) +transpose(transpose(X,-5) ,7) ) +transpose((transpose(X,-7) +transpose(((X+transpose(transpose((X+transpose(X,7) ) ,4) ,7) ) |(((X+transpose(X,4) ) +transpose(transpose(X,4) ,7) ) |transpose(X,4) ) ) ,7) ) ,4) ) +transpose((((X+transpose(transpose(X,-7) ,12) ) |echo(X,4,6) ) |(step(shuffle(X) ,12) +transpose(echo(transpose(transpose(X,4) ,4) ,4,6) ,7) ) ) ,7) ) ,-5) ,12) ) +transpose(((echo(step(arpeggio(X) ,12) ,4,6) +(((transpose(X,4) +transpose(X,12) ) +X) +((step(arpeggio(X) ,12) +transpose(echo(echo(X,4,6) ,4,6) ,4) ) +transpose(((transpose(X,4) +transpose(X,12) ) +transpose(X,4) ) ,7) ) ) ) +transpose(transpose(((shuffle(X) +transpose((((transpose(X,-5) +transpose((X+transpose(X,7) ) ,7) ) +transpose((((transpose(X,-5) +transpose(echo(transpose(X,-7) ,4,6) ,4) ) +transpose((X+X) ,7) ) +transpose(echo((X|(X+transpose(X,7) ) ) ,4,6) ,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,4) ) +transpose(echo((transpose((X+X) ,-7) +transpose(echo(X,4,6) ,12) ) ,4,6) ,7) ) ,-7) ,-5) ) ,4) ) +transpose(arpeggio((transpose(transpose(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose(transpose((X+transpose(X,12) ) ,4) ,4) ) +transpose(transpose(X,-7) ,7) ) ,-7) ,-7) +transpose(step(arpeggio(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,12) ) ,-5) ) ,12) ,7) ) ) ,7) ) ,-7) ) ,7) ) +transpose((((shuffle(transpose(transpose((echo((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,7) ) ,4,6) +transpose(transpose(X,-5) ,12) ) ,-5) ,-5) ) +transpose(((((transpose((shuffle(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,-7) |echo((shuffle(X) +transpose(shuffle(transpose(X,-7) ) ,12) ) ,4,6) ) +transpose(((transpose(echo(X,4,6) ,-7) +transpose(((arpeggio(((transpose(X,-5) +transpose(X,4) ) +transpose(echo((X+transpose(X,12) ) ,4,6) ,7) ) ) +transpose((transpose(X,-7) +transpose(step(X,12) ,7) ) ,4) ) +transpose(((X+transpose(arpeggio(shuffle(transpose(X,-7) ) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,7) ) ,12) ) +transpose((shuffle(transpose(((X+transpose(X,12) ) +transpose(transpose(arpeggio(X) ,-7) ,7) ) ,-5) ) +transpose(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-7) ,12) ) ,12) ) ,4) ) +transpose(transpose(transpose(transpose(transpose((X+transpose(X,7) ) ,-7) ,-7) ,-7) ,4) ,7) ) +transpose(((step(step(transpose(X,-5) ,12) ,12) +transpose((((transpose(((transpose(X,-5) +transpose(X,4) ) +transpose(X,7) ) ,-5) +transpose(echo(X,4,6) ,12) ) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose(transpose((arpeggio(X) +X) ,-7) ,7) ) ,7) ) +((transpose(arpeggio(transpose(X,-7) ) ,-7) +transpose(echo(((X+transpose((X|X) ,7) ) +transpose(X,7) ) ,4,6) ,7) ) +transpose(transpose(transpose(echo(step(X,12) ,4,6) ,-5) ,-7) ,7) ) ) ,-5) ) ,4) ) +transpose((step(transpose(shuffle(((X+transpose(transpose(X,4) ,7) ) +(X+((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) ,-5) ,12) +arpeggio(transpose(shuffle(transpose(transpose(transpose(transpose(X,-7) ,-7) ,-7) ,4) ) ,-5) ) ) ,7) ) +transpose(arpeggio((echo((shuffle(step(step(echo(X,4,6) ,12) ,12) ) +shuffle((shuffle(X) +X) ) ) ,4,6) +shuffle(echo((step(transpose(((transpose(step(((transpose(step(X,12) ,-7) +transpose(echo((X+transpose(X,12) ) ,4,6) ,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ,-5) +transpose(transpose((((transpose(X,-7) +arpeggio(X) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(echo(X,4,6) ,-5) ,7) ) ,-5) ,4) ) +transpose(transpose(echo(transpose(X,-5) ,4,6) ,-5) ,7) ) ,-7) ,12) +transpose(arpeggio((step(step(arpeggio(echo((X+transpose(X,7) ) ,4,6) ) ,12) ,12) |arpeggio((X+step(X,12) ) ) ) ) ,7) ) ,4,6) ) ) ) ,12) ) ,4) ) +transpose(shuffle(transpose((((((transpose((X+transpose(X,7) ) ,-5) +transpose((((X+transpose(X,12) ) +transpose(X,7) ) +transpose(((transpose(X,-5) +transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(arpeggio(X) ,-7) ,7) ) ,4) ) ,7) ) +transpose((((transpose(echo(transpose(X,-7) ,4,6) ,-5) +transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose(transpose(((transpose(X,-5) +transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,-7) ,7) ) ,7) ) +transpose(arpeggio((((transpose(X,-7) +transpose(echo(shuffle(X) ,4,6) ,12) ) +transpose((transpose(echo((X|X) ,4,6) ,-7) |(transpose(shuffle((X+transpose(X,12) ) ) ,-5) +transpose(X,7) ) ) ,4) ) +transpose(transpose(echo(shuffle((X+echo(X,4,6) ) ) ,4,6) ,-5) ,7) ) ) ,12) ) +transpose((echo(arpeggio((X+(step(arpeggio(transpose(X,-5) ) ,12) +transpose(X,-5) ) ) ) ,4,6) +transpose((transpose(((((transpose(X,-7) +transpose(X,4) ) +transpose((X|X) ,7) ) +transpose(transpose(shuffle((transpose(X,-5) +transpose(step(X,12) ,12) ) ) ,-5) ,4) ) +transpose(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose(((transpose(((X+transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) ,-7) +transpose(transpose(echo((X+transpose(X,7) ) ,4,6) ,-7) ,4) ) +transpose(transpose(arpeggio((X+transpose(X,7) ) ) ,-7) ,7) ) ,4) ) +transpose(arpeggio(echo(echo(X,4,6) ,4,6) ) ,7) ) ,7) ) ,-7) +transpose(shuffle((transpose((X+transpose(transpose(X,-5) ,12) ) ,-5) +transpose(arpeggio((X+transpose(X,12) ) ) ,12) ) ) ,7) ) ,12) ) ,4) ) +transpose(step(transpose((transpose(X,-5) +transpose((arpeggio((X|X) ) |((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(shuffle(X) ,7) ) ) ,12) ) ,-5) ,12) ,7) ) ,-7) ) ,7) ) ) ) ,12) ) ,12) )
random seed used was 231341508

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