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:
# of Tracks:
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After 20 generations the expression "X" became this:
((transpose(((transpose(((shuffle(step((shuffle(step(X,12) ) +transpose((X|X) ,7) ) ,12) ) |transpose(shuffle(transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) ) ,-7) ) +transpose(arpeggio(transpose((transpose(((X|X) +transpose(X,4) ) ,-5) |transpose(step(X,12) ,-5) ) ,-5) ) ,7) ) ,4) |((transpose(step(arpeggio((transpose(transpose(echo(X,4,6) ,-7) ,4) +transpose(echo(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ,4,6) ,12) ) ) ,12) ,-5) +transpose(transpose(echo(step((echo((shuffle(X) +transpose(X,7) ) ,4,6) +transpose(echo(transpose(((X+X) +transpose(transpose(X,4) ,7) ) ,-5) ,4,6) ,12) ) ,12) ,4,6) ,-5) ,4) ) +transpose(((echo(echo((echo(((step(echo(X,4,6) ,12) +transpose(arpeggio((X+X) ) ,4) ) +transpose(step(X,12) ,7) ) ,4,6) +transpose((((step(X,12) |echo(X,4,6) ) +transpose((X+echo(X,4,6) ) ,4) ) +transpose(transpose((X|X) ,-7) ,7) ) ,7) ) ,4,6) ,4,6) +transpose(echo((shuffle((transpose(((((step(X,12) +transpose(arpeggio(X) ,7) ) +transpose(step(step(X,12) ,12) ,4) ) +transpose((X|(X|X) ) ,7) ) +(((((X+transpose(X,12) ) +transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) +transpose((echo(X,4,6) +transpose(X,12) ) ,4) ) +transpose((X|X) ,7) ) ) ,-5) +transpose(echo((step(step(echo(X,4,6) ,12) ,12) +((transpose(transpose(X,4) ,4) +transpose(X,4) ) +transpose(transpose(shuffle(X) ,4) ,7) ) ) ,4,6) ,7) ) ) +((echo(arpeggio(echo(X,4,6) ) ,4,6) +transpose(transpose(arpeggio(echo(X,4,6) ) ,-5) ,4) ) +transpose(step((step(shuffle(X) ,12) +transpose(echo(arpeggio(step(X,12) ) ,4,6) ,7) ) ,12) ,7) ) ) ,4,6) ,4) ) +transpose(step(((((echo(step((X+transpose(X,12) ) ,12) ,4,6) +transpose(step(transpose(((step(shuffle(X) ,12) +transpose(echo(step(X,12) ,4,6) ,4) ) +transpose(((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) ,-5) ,12) ,4) ) +transpose(((((X+X) +transpose((X|echo(X,4,6) ) ,4) ) +transpose(echo(X,4,6) ,7) ) |((arpeggio(step(X,12) ) |X) +transpose(step(arpeggio(X) ,12) ,7) ) ) ,7) ) +transpose(transpose(X,4) ,4) ) +transpose((((((transpose(X,-5) +transpose(step(X,12) ,12) ) +transpose(arpeggio(transpose(X,4) ) ,4) ) +transpose(X,7) ) |echo(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,4) ,7) ) +transpose((X|X) ,-7) ) ,4,6) ) +arpeggio(echo((((X+step(transpose(X,-7) ,12) ) +transpose(echo(X,4,6) ,4) ) +transpose((X+X) ,7) ) ,4,6) ) ) ,7) ) ,12) ,7) ) ,7) ) ) +transpose((step(transpose(((transpose((transpose(arpeggio(step(step(echo(X,4,6) ,12) ,12) ) ,-7) +transpose(transpose(shuffle(((transpose(X,4) +transpose(step(X,12) ,4) ) +transpose(transpose(X,4) ,7) ) ) ,4) ,12) ) ,-5) +echo((((((((step((((X|X) +transpose(shuffle(X) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,12) +transpose(transpose((shuffle((arpeggio(X) +X) ) +transpose(step(transpose(X,-7) ,12) ,7) ) ,4) ,12) ) +transpose((((transpose(((X+transpose(transpose(X,-5) ,12) ) +transpose((arpeggio(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,7) ) ,-5) +transpose(arpeggio((((X+X) |X) |(X|X) ) ) ,4) ) +transpose((transpose(echo(X,4,6) ,-7) +transpose(shuffle((X+transpose(X,12) ) ) ,7) ) ,7) ) +transpose(transpose(echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,4,6) ,-7) ,7) ) ,4) ) +transpose((arpeggio((step(X,12) +transpose(X,7) ) ) |((((transpose(X,-7) +transpose(X,7) ) |(step(X,12) |transpose(transpose(X,-5) ,4) ) ) +transpose(transpose(arpeggio((X+X) ) ,-5) ,4) ) +transpose(echo(arpeggio((X+X) ) ,4,6) ,7) ) ) ,7) ) +transpose(((transpose(transpose((((X|X) +transpose(step(X,12) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-7) ,-7) +transpose(arpeggio((echo(echo(X,4,6) ,4,6) |echo(transpose(X,-7) ,4,6) ) ) ,4) ) +transpose((step(arpeggio(transpose(echo(X,4,6) ,-7) ) ,12) +transpose(shuffle(shuffle(X) ) ,7) ) ,7) ) ,4) ) +transpose(step(((X+transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,12) ,7) ) +transpose((step(((shuffle(transpose(echo(arpeggio(X) ,4,6) ,-5) ) |transpose(transpose(arpeggio((X|X) ) ,-5) ,4) ) +((((X|X) +((X+transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ) +transpose(step(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ,12) ) |(((echo(X,4,6) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) +echo(echo(X,4,6) ,4,6) ) ) ) ,12) |shuffle(echo((transpose(X,-7) +transpose(X,-5) ) ,4,6) ) ) ,4) ) +transpose((transpose(step((arpeggio(X) +arpeggio(X) ) ,12) ,-7) |echo((arpeggio(step(X,12) ) +transpose(arpeggio(((transpose(transpose(X,-7) ,4) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ) +transpose(step(step(X,12) ,12) ,7) ) ) ,7) ) ,4,6) ) ,7) ) ,4,6) ) +transpose(echo(transpose(((arpeggio(arpeggio((X+transpose(X,7) ) ) ) +transpose((echo(X,4,6) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) +transpose(transpose(transpose(((shuffle(X) +transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ,-7) ,4) ,7) ) ,4) ,4,6) ,12) ) ,-7) ,12) +transpose((step(shuffle(transpose(transpose((((X|X) +shuffle(transpose(X,4) ) ) +transpose(echo((((echo(X,4,6) +transpose(shuffle(X) ,7) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4) ) +transpose(X,7) ) ,4,6) ,4) ) ,4) ,-7) ) ,12) +transpose(arpeggio(((step(step(arpeggio(((arpeggio(X) |X) +transpose(shuffle(X) ,4) ) ) ,12) ,12) +transpose(shuffle(step((shuffle(step(X,12) ) +transpose(X,-7) ) ,12) ) ,4) ) +transpose(step(step(step(((step(X,12) +transpose((X+transpose(X,7) ) ,4) ) +transpose(arpeggio(X) ,7) ) ,12) ,12) ,12) ,7) ) ) ,7) ) ,7) ) ,7) ) ,4) +transpose(shuffle(echo(echo(arpeggio(((X|X) +transpose(((shuffle(X) +transpose(transpose(X,-7) ,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ) ) ,4,6) ,4,6) ) ,4) ) +transpose(((transpose(((((transpose(((arpeggio(echo(step(X,12) ,4,6) ) +transpose(shuffle(((arpeggio(transpose(((X+transpose(X,7) ) +transpose(X,12) ) ,4) ) +transpose(echo((arpeggio(X) |X) ,4,6) ,4) ) +transpose(shuffle(((transpose(X,-5) +transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,4) ,7) ) ) ,7) ) ) ,4) ) +transpose(arpeggio((arpeggio(X) +transpose(transpose(X,-7) ,7) ) ) ,7) ) ,4) |(((shuffle(arpeggio(X) ) +transpose(echo(shuffle(echo(X,4,6) ) ,4,6) ,4) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,7) ) +transpose((((X+transpose(X,-7) ) +transpose(arpeggio(X) ,12) ) |(transpose(X,-5) +transpose(echo(X,4,6) ,4) ) ) ,12) ) ) +transpose(arpeggio(transpose(transpose(step(((transpose(arpeggio(arpeggio(X) ) ,4) +shuffle((X|(X|X) ) ) ) |step((X+transpose(X,7) ) ,12) ) ,12) ,4) ,-7) ) ,12) ) +transpose(((echo(shuffle(step(echo(((shuffle(X) +transpose((X+X) ,4) ) +transpose(X,7) ) ,4,6) ,12) ) ,4,6) +transpose((arpeggio(shuffle(transpose(transpose((X|arpeggio(X) ) ,-7) ,-7) ) ) |echo(transpose(((transpose(X,-5) +transpose(echo(arpeggio(X) ,4,6) ,4) ) +transpose((((X+transpose(X,12) ) +transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) ,7) ) ,-7) ,4,6) ) ,12) ) +transpose(arpeggio(shuffle(step(transpose(shuffle(shuffle(X) ) ,-7) ,12) ) ) ,12) ) ,12) ) |(((shuffle(((transpose((((transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,-5) +transpose(((shuffle(X) +shuffle(arpeggio(X) ) ) +(step(X,12) +transpose(((step(X,12) +transpose(arpeggio(X) ,7) ) +step(X,12) ) ,12) ) ) ,4) ) +transpose((arpeggio((shuffle(transpose(X,-5) ) |arpeggio(X) ) ) |((X+step(X,12) ) |echo((X|shuffle(X) ) ,4,6) ) ) ,7) ) +transpose(((transpose(X,4) +(transpose(X,4) |step(X,12) ) ) +transpose(((arpeggio(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose((X+X) ,7) ) ) +transpose(shuffle(((X+transpose(shuffle(X) ,4) ) +transpose(transpose(transpose(X,4) ,-7) ,7) ) ) ,4) ) +transpose((X|(X|(X|X) ) ) ,7) ) ,7) ) ,7) ) ,-7) +transpose(echo(echo(((echo(X,4,6) +transpose(transpose(X,-5) ,12) ) |step(transpose(X,-5) ,12) ) ,4,6) ,4,6) ,4) ) +transpose(arpeggio((step(echo(X,4,6) ,12) |transpose(echo(echo(X,4,6) ,4,6) ,4) ) ) ,7) ) ) +transpose(shuffle(step(((echo(transpose(step((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) |shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,12) ,-5) ,4,6) +transpose(arpeggio((((arpeggio(((transpose(X,-7) +transpose(transpose(X,4) ,4) ) +transpose((((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ,7) ) ) |step(shuffle(X) ,12) ) +transpose(shuffle(shuffle(arpeggio(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-7) ,7) ) ,-7) ) ) ) ,4) ) +transpose(echo(echo(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4,6) ,4,6) ,7) ) ) ,4) ) +transpose(arpeggio(echo(transpose(arpeggio(arpeggio(((X+transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ) ) ,-7) ,4,6) ) ,7) ) ,12) ) ,12) ) +transpose(((echo(transpose((((X+transpose(echo((echo(X,4,6) |X) ,4,6) ,4) ) +transpose(step(X,12) ,7) ) +transpose(transpose((((((X+transpose(X,7) ) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ) +transpose(echo(X,4,6) ,7) ) +transpose(transpose(((arpeggio(X) +transpose(X,4) ) +transpose(X,7) ) ,-5) ,4) ) +transpose((step(X,12) +transpose(X,7) ) ,7) ) ,-5) ,7) ) ,4) ,4,6) +transpose((((arpeggio(transpose((X+X) ,-7) ) +((transpose(transpose(X,-5) ,-7) +transpose((((X+transpose(X,12) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose(((transpose(X,4) +transpose(step(X,12) ,4) ) +transpose((arpeggio(X) +(((X+transpose(X,4) ) +transpose(X,7) ) |step(X,12) ) ) ,7) ) ,7) ) ) +transpose(((arpeggio(X) +transpose(((X+X) |(((arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) +(echo(X,4,6) |echo(echo(X,4,6) ,4,6) ) ) ) ,12) ) +transpose(transpose(arpeggio(step(echo(X,4,6) ,12) ) ,-7) ,7) ) ,7) ) +transpose(arpeggio((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X|X) ,12) ) +transpose((step(X,12) +X) ,7) ) +transpose(arpeggio(step(X,12) ) ,7) ) ) ,7) ) ,4) ) +transpose((echo(arpeggio(((transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) +transpose(X,4) ) +transpose(((X+step(echo((X+X) ,4,6) ,12) ) |(step(echo(X,4,6) ,12) +((echo(X,4,6) +transpose(transpose((X+X) ,-7) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) ) ) ,7) ) ) ,4,6) +transpose(((arpeggio(transpose((((shuffle(transpose(((shuffle(X) +transpose(transpose((X+transpose(X,7) ) ,-5) ,4) ) +transpose((transpose(echo(X,4,6) ,4) |transpose(X,-7) ) ,7) ) ,4) ) |(echo(((X+transpose((X+X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,4,6) +((X|X) +transpose((step(X,12) +transpose(transpose(X,-5) ,7) ) ,12) ) ) ) +transpose(echo((((transpose(X,4) +transpose((X+X) ,4) ) +transpose(arpeggio(X) ,7) ) +echo(X,4,6) ) ,4,6) ,4) ) +transpose(((transpose(echo(step(transpose(X,-7) ,12) ,4,6) ,-7) +transpose(transpose(step(transpose(((X+X) +transpose(shuffle(X) ,12) ) ,-5) ,12) ,4) ,12) ) |((shuffle(step(X,12) ) +(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ) +echo(step(echo(shuffle(X) ,4,6) ,12) ,4,6) ) ) ,7) ) ,4) ) +transpose(transpose(echo(transpose(step(transpose(step(X,12) ,4) ,12) ,-7) ,4,6) ,-5) ,4) ) +transpose(shuffle((((transpose(step((((shuffle((X+transpose(echo(X,4,6) ,12) ) ) +arpeggio(X) ) +transpose(step(X,12) ,4) ) +transpose(((step(arpeggio(X) ,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((transpose(X,4) +transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ,7) ) ,7) ) ,12) ,4) +transpose(transpose((step(step(X,12) ,12) +transpose((X+shuffle(X) ) ,-7) ) ,-5) ,7) ) +transpose(echo(step(((X+transpose(X,12) ) |((echo(X,4,6) +transpose(transpose(arpeggio(X) ,-7) ,4) ) +transpose(step(arpeggio(X) ,12) ,7) ) ) ,12) ,4,6) ,4) ) +transpose(shuffle(shuffle((shuffle(X) +transpose(X,7) ) ) ) ,7) ) ) ,7) ) ,12) ) ,12) ) ,4) ) +transpose((((shuffle(transpose(((((echo(transpose(arpeggio((step(echo(X,4,6) ,12) |arpeggio(X) ) ) ,-7) ,4,6) +transpose(arpeggio(arpeggio(transpose(transpose(echo(X,4,6) ,-5) ,4) ) ) ,4) ) +transpose(((echo(X,4,6) +transpose(arpeggio(shuffle(echo(X,4,6) ) ) ,4) ) +transpose(arpeggio(transpose(shuffle((((X+(X+X) ) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ) ,-5) ) ,7) ) ,7) ) +transpose((arpeggio(shuffle(transpose(arpeggio(X) ,4) ) ) +(((echo(transpose(transpose((X|X) ,-7) ,4) ,4,6) +transpose((arpeggio((shuffle(X) +shuffle(X) ) ) +transpose(X,-7) ) ,7) ) +transpose((transpose(transpose((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(arpeggio((X+X) ) ,7) ) ,4) ,-7) +echo(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4,6) ) ,4) ) +transpose((transpose(((echo(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4,6) +transpose(transpose((X|X) ,-7) ,4) ) +transpose(arpeggio(X) ,7) ) ,-5) |(transpose(X,4) +(step(X,12) +(X+X) ) ) ) ,7) ) ) ,4) ) +transpose(step(transpose((shuffle(echo(echo(X,4,6) ,4,6) ) +transpose(echo(X,4,6) ,7) ) ,-5) ,12) ,7) ) ,-5) ) +transpose(shuffle((transpose(((transpose(X,4) +transpose(step(((X+transpose(echo(X,4,6) ,12) ) +transpose(X,4) ) ,12) ,4) ) +transpose(((arpeggio(echo(arpeggio(X) ,4,6) ) +transpose((((transpose(X,-5) +transpose(((step(X,12) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ,12) ) +transpose(transpose(((shuffle(X) +transpose(shuffle(X) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) ,4) ) +transpose(transpose(X,-5) ,7) ) ,4) ) +transpose((transpose(echo((X+transpose(X,12) ) ,4,6) ,4) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) ,12) ) ,7) ) ,7) ) ,-7) +transpose(echo(((arpeggio(((X+transpose(X,12) ) +transpose(X,7) ) ) +(echo((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,4,6) |arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) +transpose(shuffle(((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(echo(X,4,6) ,-7) ,7) ) ) ,12) ) ,4,6) ,12) ) ) ,7) ) +transpose(arpeggio(arpeggio(echo((transpose(step(((X+transpose(shuffle(X) ,4) ) +transpose(X,7) ) ,12) ,-5) +((transpose(echo(step(X,12) ,4,6) ,-7) +transpose(transpose(shuffle(step(X,12) ) ,-5) ,4) ) +transpose((echo((X+transpose(X,12) ) ,4,6) +(X|X) ) ,7) ) ) ,4,6) ) ) ,4) ) +transpose(((((((((echo(echo(((X+transpose(arpeggio(X) ,4) ) +transpose(((X+X) |X) ,7) ) ,4,6) ,4,6) +transpose(step(echo(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4) ,4,6) ,12) ,4) ) +transpose(((step(echo(X,4,6) ,12) +transpose(echo(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4,6) ,12) ) +transpose(echo(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio(X) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4,6) ,7) ) ,7) ) +transpose((shuffle(transpose(echo(X,4,6) ,-5) ) +transpose((((transpose(shuffle(X) ,-5) +transpose(echo(X,4,6) ,4) ) +transpose(transpose(echo(X,4,6) ,-7) ,7) ) |(arpeggio(transpose(X,4) ) +transpose(X,-5) ) ) ,-5) ) ,4) ) +transpose((echo(arpeggio(((echo(X,4,6) +transpose(shuffle(X) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ,4,6) +transpose(transpose((arpeggio(X) +echo(arpeggio((X+X) ) ,4,6) ) ,-7) ,7) ) ,7) ) +transpose(arpeggio(((((arpeggio(X) |((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) +transpose(((X+transpose(X,4) ) +transpose(arpeggio(echo(X,4,6) ) ,7) ) ,4) ) +transpose(step(step(X,12) ,12) ,7) ) |echo(transpose(arpeggio(X) ,-7) ,4,6) ) ) ,4) ) +transpose(transpose(transpose(step(shuffle(transpose(echo(shuffle(X) ,4,6) ,-7) ) ,12) ,-7) ,-5) ,7) ) |echo((((((((arpeggio(echo(transpose((X+X) ,4) ,4,6) ) |transpose(step(X,12) ,4) ) +transpose(transpose(arpeggio((X+X) ) ,-7) ,4) ) +transpose(((step((((X+X) +transpose(X,12) ) +transpose(echo(transpose(X,-5) ,4,6) ,7) ) ,12) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |X) ,4) ) +transpose((step(X,12) |(arpeggio(transpose(X,-5) ) +((transpose(transpose(X,4) ,-7) +transpose(step(X,12) ,4) ) +transpose(echo((X+X) ,4,6) ,7) ) ) ) ,7) ) ,7) ) +transpose(((echo((shuffle(echo(X,4,6) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) ,4,6) +transpose(((transpose(echo(X,4,6) ,4) +transpose((((X+transpose(step(arpeggio(X) ,12) ,12) ) +transpose(((shuffle((X+transpose(X,12) ) ) +transpose((((X+transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((arpeggio(X) +transpose(X,7) ) ,7) ) ,4) ) +transpose(arpeggio(transpose(X,-5) ) ,7) ) ,4) ) +transpose((echo(transpose(arpeggio(X) ,-7) ,4,6) |X) ,7) ) ,12) ) +(((X+transpose(X,4) ) +transpose(X,7) ) +transpose((((shuffle((transpose(X,4) +transpose(echo(X,4,6) ,12) ) ) |(X|transpose(X,-7) ) ) +transpose(arpeggio(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ,4) ) +transpose(transpose(transpose(X,4) ,4) ,7) ) ,12) ) ) ,4) ) +transpose(step(shuffle(transpose(transpose(echo(echo(X,4,6) ,4,6) ,4) ,4) ) ,12) ,7) ) +transpose(arpeggio((transpose(transpose(transpose(arpeggio(X) ,-5) ,4) ,4) |echo(transpose(X,4) ,4,6) ) ) ,4) ) +transpose(((step(arpeggio(((((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +transpose(echo(echo(arpeggio(X) ,4,6) ,4,6) ,7) ) |(shuffle(echo(X,4,6) ) |((X+transpose(X,4) ) +transpose((X+X) ,7) ) ) ) +transpose((((((X+transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) +transpose((echo(X,4,6) +transpose(transpose(X,-7) ,12) ) ,7) ) +transpose((((X+X) +X) |arpeggio((X+transpose(X,7) ) ) ) ,4) ) +transpose((shuffle((((X+transpose(X,12) ) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ) +(X|X) ) ,7) ) ,4) ) +transpose(((step((X|X) ,12) +transpose(shuffle(arpeggio(step(echo(X,4,6) ,12) ) ) ,4) ) +transpose(((transpose(arpeggio(X) ,-7) +transpose(transpose(transpose(X,-5) ,-7) ,12) ) +transpose(step(step(X,12) ,12) ,7) ) ,7) ) ,7) ) ) ,12) +transpose(echo((step((step(X,12) |(step(X,12) +transpose(X,7) ) ) ,12) |transpose((echo(X,4,6) |X) ,4) ) ,4,6) ,4) ) +transpose(shuffle(transpose(arpeggio(X) ,4) ) ,7) ) ,7) ) ,4,6) ) +transpose(step(transpose(((((((shuffle(echo(arpeggio(X) ,4,6) ) +transpose(arpeggio(shuffle((X+transpose(X,12) ) ) ) ,4) ) +transpose(step(transpose(arpeggio(step(X,12) ) ,-7) ,12) ,7) ) +transpose(((((((X|((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(transpose(echo(step(X,12) ,4,6) ,-7) ,4) ) +transpose(step((((X+X) +transpose(((X|X) +transpose(X,12) ) ,4) ) +transpose(X,7) ) ,12) ,7) ) +transpose(arpeggio((transpose(echo(arpeggio(X) ,4,6) ,-7) +step(X,12) ) ) ,4) ) +transpose(step(((arpeggio(echo(X,4,6) ) +transpose(echo(((X+transpose(transpose(X,4) ,4) ) +transpose((X|X) ,7) ) ,4,6) ,4) ) +transpose((arpeggio((X+transpose(X,12) ) ) |transpose(X,4) ) ,7) ) ,12) ,7) ) ,4) ) +transpose(arpeggio(transpose(step(shuffle(transpose((X+transpose(X,12) ) ,-7) ) ,12) ,4) ) ,7) ) +transpose(step(arpeggio(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(arpeggio(X) ,7) ) ) ,12) ,-7) ) +transpose(step(step(((shuffle(X) +transpose(X,4) ) +transpose(X,7) ) ,12) ,12) ,7) ) ,-7) ,12) ,12) ) ,7) ) ,7) ) ) ,4) +transpose(shuffle(step(((((transpose(((step(((X+transpose(((((arpeggio(X) +transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio((X+transpose(X,7) ) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) +transpose(echo(transpose(echo(step((X|X) ,12) ,4,6) ,4) ,4,6) ,4) ) +transpose(step(((transpose(X,4) +((arpeggio(X) +transpose(X,4) ) +transpose(X,7) ) ) +((echo(shuffle(X) ,4,6) +transpose(transpose(transpose(X,4) ,4) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |X) ,7) ) ) ,12) ,7) ) ,-5) +transpose((arpeggio(transpose(transpose(step(arpeggio((((X+transpose(X,7) ) +transpose((X+shuffle(X) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,12) ,4) ,-7) ) |transpose((((((shuffle(transpose(X,-5) ) +transpose(echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) ,4) ) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,7) ) +transpose(step(X,12) ,-5) ) |(shuffle(echo(X,4,6) ) +transpose(arpeggio(arpeggio(((X|X) |X) ) ) ,12) ) ) +transpose((transpose(step(arpeggio((X+X) ) ,12) ,4) +transpose(shuffle(X) ,4) ) ,7) ) ,-5) ) ,4) ) +transpose(echo(transpose(((step(echo(((transpose(X,-5) +transpose(X,12) ) +X) ,4,6) ,12) +transpose((echo(((X+transpose(X,12) ) |shuffle(X) ) ,4,6) +((arpeggio(X) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose((X+X) ,7) ) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) ,4) ) +transpose((transpose(X,4) |(X+transpose(X,7) ) ) ,7) ) ) ,4) ) +transpose(((((((X+X) +transpose(shuffle(X) ,4) ) +transpose((transpose(X,-7) +(X+transpose(X,12) ) ) ,7) ) |step(X,12) ) +echo(arpeggio(((X+transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ) ,4,6) ) +transpose(shuffle(X) ,-5) ) ,7) ) ,-5) ,4,6) ,7) ) +transpose((((arpeggio(transpose((shuffle((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +transpose((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +X) ,4) ) ) +transpose(transpose(X,-7) ,12) ) ,4) ) +transpose(step(arpeggio(shuffle(X) ) ,12) ,4) ) +transpose(step(echo(transpose(transpose(step(shuffle((X|X) ) ,12) ,4) ,-5) ,4,6) ,12) ,7) ) +((transpose(transpose(step((echo(((shuffle(X) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ,4,6) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ,-5) ,4) +step(echo(transpose((shuffle(X) |transpose(X,-5) ) ,4) ,4,6) ,12) ) +step(echo((transpose(step(shuffle(transpose(echo(X,4,6) ,-5) ) ,12) ,4) +transpose(transpose(transpose((echo(echo(X,4,6) ,4,6) +transpose(echo(X,4,6) ,7) ) ,-5) ,-5) ,12) ) ,4,6) ,12) ) ) ,4) ) +transpose((transpose(step(transpose((X+transpose(X,12) ) ,4) ,12) ,-7) |arpeggio(((transpose(transpose((shuffle(X) |X) ,-7) ,-7) +transpose(((((arpeggio(step(X,12) ) +shuffle(echo(X,4,6) ) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((step(transpose(X,4) ,12) +transpose((X+X) ,12) ) +shuffle(X) ) ,7) ) |shuffle(transpose(echo(X,4,6) ,4) ) ) ,4) ) +transpose(echo(step(step(echo(X,4,6) ,12) ,12) ,4,6) ,7) ) ) ) ,7) ) ,12) ) ,4) ) +transpose(transpose(((step((((transpose(((transpose(transpose(X,4) ,4) +transpose(transpose(transpose(transpose(X,-7) ,4) ,-5) ,4) ) +transpose((transpose(X,4) +step(arpeggio(X) ,12) ) ,7) ) ,-5) +((transpose((echo(transpose((arpeggio((X+transpose(X,7) ) ) +(X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,4) ,4,6) +(transpose((shuffle(transpose(X,-5) ) +transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) |(X|X) ) ,12) ) ,4) +arpeggio(transpose(arpeggio(shuffle(X) ) ,-7) ) ) ) ,4) +transpose(((step(echo(shuffle(X) ,4,6) ,12) +arpeggio(step((X+X) ,12) ) ) |((transpose(((X+transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ,-5) +transpose(((((echo(transpose(X,-5) ,4,6) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) +transpose(transpose(transpose(step(arpeggio(X) ,12) ,-5) ,-7) ,4) ) +transpose(((X+X) |(X|X) ) ,7) ) ,4) ) +transpose(shuffle((X+transpose(echo(X,4,6) ,12) ) ) ,7) ) ) ,4) ) +transpose(echo(transpose(step(transpose(X,-5) ,12) ,-7) ,4,6) ,7) ) ) +transpose((((((step(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) |shuffle(step(echo(X,4,6) ,12) ) ) +transpose(transpose((echo(((X+transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ,4,6) +transpose(shuffle(X) ,7) ) ,-5) ,4) ) +transpose(step((X|X) ,12) ,7) ) |((echo(((transpose((X|X) ,-5) +echo(arpeggio(X) ,4,6) ) |step(step((transpose(X,-7) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,12) ,12) ) ,4,6) +transpose(((echo((X+X) ,4,6) +transpose(step((X+transpose(X,12) ) ,12) ,12) ) +transpose(transpose(X,4) ,12) ) ,4) ) +transpose(((shuffle(echo(X,4,6) ) +transpose((transpose(((X+transpose(X,7) ) +(X+X) ) ,-7) +transpose(transpose((X+transpose(X,12) ) ,-5) ,7) ) ,4) ) +transpose(((step(step(X,12) ,12) +transpose(transpose(X,-7) ,4) ) +transpose((transpose(arpeggio(X) ,-7) +echo(transpose(X,-7) ,4,6) ) ,7) ) ,7) ) ,7) ) ) |(shuffle(((((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) |((transpose(X,4) +transpose(step(X,12) ,4) ) +transpose((X|X) ,7) ) ) |transpose(transpose(X,-7) ,-7) ) +((arpeggio((X+step(X,12) ) ) +transpose(((step((X+X) ,12) +transpose(arpeggio(arpeggio(X) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |X) ,7) ) ,4) ) +transpose(((((transpose(X,-5) +transpose((X+transpose(X,12) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(arpeggio((X+X) ) ,4) ) +transpose((echo(X,4,6) |transpose(X,-5) ) ,7) ) ,7) ) ) +transpose(echo((transpose((X+X) ,-5) +transpose(echo(transpose(X,-7) ,4,6) ,-5) ) ,4,6) ,-7) ) ) |((arpeggio(echo(transpose(transpose(echo(echo(X,4,6) ,4,6) ,-7) ,-5) ,4,6) ) +transpose((((transpose((echo(transpose(X,4) ,4,6) +transpose(transpose(X,-5) ,7) ) ,4) +transpose((((X+(X+X) ) +transpose((arpeggio(step(X,12) ) |((echo(X,4,6) +transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ,4) ) +transpose(echo((transpose(X,-5) |(X+transpose(X,7) ) ) ,4,6) ,7) ) ,4) ) +transpose(transpose(step(X,12) ,-7) ,7) ) +transpose(transpose((transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-7) +transpose((echo(X,4,6) +transpose(X,7) ) ,12) ) ,4) ,7) ) ,4) ) +transpose(step(transpose(((((echo(X,4,6) +transpose(arpeggio(X) ,4) ) +transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(((transpose(X,-5) |(X|transpose(X,4) ) ) +transpose(((shuffle(X) +transpose(echo(X,4,6) ,4) ) +transpose(arpeggio(X) ,7) ) ,7) ) ,7) ) ,-7) ,12) ,7) ) ) ) ,4) ) +transpose(transpose(shuffle(transpose((transpose(((X+transpose((((X+transpose(X,12) ) +transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,-7) ) ,7) ) ,-7) +((transpose(((shuffle(X) +transpose(echo(X,4,6) ,7) ) |echo(X,4,6) ) ,4) +transpose(((transpose((((X+transpose(X,12) ) +transpose((X|X) ,4) ) +transpose(step(X,12) ,7) ) ,-7) +transpose(shuffle((X+X) ) ,4) ) +transpose(((shuffle(X) +transpose(echo(X,4,6) ,4) ) +transpose(transpose(X,-5) ,7) ) ,7) ) ,4) ) +transpose((arpeggio((X+X) ) +(arpeggio((X+X) ) |transpose(echo(X,4,6) ,4) ) ) ,7) ) ) ,4) ) ,-7) ,7) ) ,12) +transpose(transpose(transpose((transpose(transpose(step(step(transpose(X,4) ,12) ,12) ,-7) ,4) +echo((echo(shuffle(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ) ,4,6) |(((arpeggio(X) |(X+transpose(X,12) ) ) +transpose(X,-7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ,4,6) ) ,4) ,4) ,4) ) +transpose(transpose(((echo(arpeggio(transpose((step(step(arpeggio(arpeggio(X) ) ,12) ,12) |(shuffle(((echo(X,4,6) |X) +transpose(echo(X,4,6) ,-7) ) ) +(((X+transpose(((transpose(X,4) +transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,-7) ,7) ) +transpose(((X+transpose(transpose(X,-5) ,4) ) +transpose(echo((X+X) ,4,6) ,7) ) ,4) ) ) ) ,-5) ) ,4,6) +transpose((((step(((((arpeggio(echo(((transpose(X,4) +transpose(transpose(shuffle(X) ,-5) ,4) ) +transpose((shuffle(X) +(X+X) ) ,7) ) ,4,6) ) +transpose((echo(shuffle(arpeggio(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ) ) ,4,6) |(echo((transpose(X,-7) +transpose(step((X|X) ,12) ,12) ) ,4,6) +transpose((((shuffle((arpeggio(X) +transpose(step(X,12) ,7) ) ) +transpose((transpose(X,-5) +arpeggio(X) ) ,4) ) +transpose((echo(X,4,6) +transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,7) ) ,7) ) +step(X,12) ) ,7) ) ) ,4) ) +transpose((((step(X,12) |transpose(X,4) ) |(transpose(((X+transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,-5) +X) ) +transpose(shuffle((arpeggio(transpose(echo(X,4,6) ,4) ) +transpose(transpose((X|X) ,-5) ,-7) ) ) ,7) ) ,7) ) +transpose((transpose((X+transpose(X,12) ) ,-7) +transpose((arpeggio(step(shuffle((X|X) ) ,12) ) +transpose((transpose(X,4) +transpose((step(X,12) +X) ,12) ) ,12) ) ,12) ) ,4) ) +transpose(transpose(echo(transpose(step(echo(transpose(X,-5) ,4,6) ,12) ,-7) ,4,6) ,-7) ,7) ) ,12) +transpose(shuffle(((((arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) +transpose(transpose((X+X) ,-7) ,12) ) +transpose((((arpeggio((X|(arpeggio(X) +transpose(X,12) ) ) ) +transpose(step(transpose(X,4) ,12) ,4) ) +transpose((X|(X+X) ) ,7) ) +arpeggio(shuffle(X) ) ) ,4) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) +echo(transpose(transpose(step(((X+transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,12) ,-7) ,-7) ,4,6) ) ) ,4) ) +transpose(step(((((shuffle(((arpeggio((X+transpose(X,12) ) ) +transpose(arpeggio((X+transpose((X+transpose(X,12) ) ,12) ) ) ,4) ) +transpose(arpeggio(transpose(X,-7) ) ,7) ) ) +transpose(((transpose(arpeggio(shuffle(X) ) ,-7) +transpose(arpeggio(transpose((X+X) ,-5) ) ,4) ) +transpose((((shuffle(transpose(X,-7) ) +(transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) +transpose(step(transpose(transpose(X,-5) ,-5) ,12) ,4) ) +transpose(shuffle(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,7) ) ,7) ) ,4) ) +transpose((((arpeggio((X|X) ) +(X+X) ) +transpose((X+transpose(X,7) ) ,7) ) +(transpose(X,-7) +transpose(echo(echo(X,4,6) ,4,6) ,12) ) ) ,7) ) +transpose(transpose(((X|X) +transpose(echo(transpose(X,-7) ,4,6) ,12) ) ,4) ,4) ) +transpose((((((X|X) +arpeggio(X) ) +transpose((((X+X) +transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(transpose(X,-7) ,12) ) ,7) ) ,4) ) +transpose((step(shuffle((X+X) ) ,12) +arpeggio(X) ) ,7) ) +step((transpose(echo(X,4,6) ,-7) +shuffle(X) ) ,12) ) ,7) ) ,12) ,7) ) +step(step(arpeggio((step(step(arpeggio(X) ,12) ,12) |(((((shuffle((X+transpose(X,12) ) ) +transpose((X+X) ,4) ) +transpose(transpose(X,-7) ,7) ) +arpeggio(transpose(shuffle(X) ,4) ) ) +transpose(echo((X+transpose(X,12) ) ,4,6) ,4) ) +transpose(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) +transpose(((step(X,12) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ,7) ) |(transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ,7) ) ) ) ,12) ,12) ) ,4) ) +transpose(arpeggio(transpose(((shuffle(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-7) ) +transpose(shuffle(shuffle(shuffle(((transpose(X,-7) +X) +((X+X) +transpose(X,-7) ) ) ) ) ) ,4) ) +transpose(arpeggio(shuffle(arpeggio((echo(X,4,6) +transpose(X,12) ) ) ) ) ,7) ) ,-7) ) ,7) ) ,-7) ,7) ) ,-5) ,7) ) ,7) )
random seed used was 65007985

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