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 18 generations the expression "X" became this:
(((echo((((shuffle(((transpose(step((shuffle(((X+transpose(X,12) ) +transpose(X,-7) ) ) +(X+X) ) ,12) ,4) +transpose(arpeggio(shuffle(X) ) ,12) ) +transpose(((((X+transpose(X,12) ) +transpose((X+X) ,12) ) |(X|echo(X,4,6) ) ) +transpose(step(((X+transpose(X,12) ) +transpose(shuffle(step(X,12) ) ,7) ) ,12) ,7) ) ,12) ) ) +(transpose(arpeggio(shuffle((((arpeggio((X+X) ) +transpose(transpose(X,4) ,7) ) +transpose((shuffle((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) ) +transpose((echo(X,4,6) +transpose(transpose((X+transpose(X,7) ) ,-7) ,12) ) ,7) ) ,4) ) +transpose(arpeggio(((X+transpose(X,12) ) +transpose(((transpose(X,-7) +transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,7) ) ) ,7) ) ) ) ,-5) |arpeggio(echo(transpose(X,-7) ,4,6) ) ) ) +transpose(shuffle((shuffle(((((arpeggio(transpose(X,-7) ) +transpose(((echo(X,4,6) +transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(arpeggio((transpose(X,-5) +transpose(transpose(X,-5) ,12) ) ) ,7) ) +transpose(shuffle((((echo(arpeggio(X) ,4,6) +transpose(transpose(step(X,12) ,-7) ,7) ) +transpose((step((X+X) ,12) +transpose((X+transpose(transpose(X,4) ,12) ) ,7) ) ,4) ) +transpose((X+transpose(echo(X,4,6) ,12) ) ,7) ) ) ,7) ) +transpose(step(((X+transpose(X,12) ) +transpose(X,7) ) ,12) ,12) ) ) |(transpose(echo(X,4,6) ,4) +step(((transpose(transpose(X,-5) ,4) +transpose((shuffle(X) +transpose((X+transpose(X,7) ) ,12) ) ,12) ) +transpose(transpose(step(transpose(((X+transpose(X,12) ) +transpose(X,12) ) ,-7) ,12) ,-5) ,12) ) ,12) ) ) ) ,7) ) +transpose(shuffle(((shuffle(((step((echo(X,4,6) |arpeggio((X+transpose(X,12) ) ) ) ,12) +(transpose(((arpeggio(X) +transpose((((X+transpose(X,7) ) +transpose(X,4) ) +transpose(step(X,12) ,7) ) ,4) ) +transpose(((X+transpose(X,7) ) +transpose(X,-5) ) ,7) ) ,-5) |transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) +transpose(arpeggio((X+X) ) ,7) ) ,-7) ) ) +transpose(((shuffle((step(X,12) +transpose(X,12) ) ) +transpose(((X+transpose(X,7) ) +((shuffle(X) +transpose(transpose(step(X,12) ,-5) ,4) ) +transpose(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) ,7) ) ) ,12) ) +transpose(((step((X+X) ,12) +transpose((X+transpose(transpose(X,-7) ,12) ) ,7) ) |(transpose((X+X) ,-5) +transpose(arpeggio(X) ,12) ) ) ,7) ) ,12) ) ) +transpose((transpose((arpeggio(((X+X) |(X+X) ) ) +transpose(echo(echo((step(X,12) +arpeggio(X) ) ,4,6) ,4,6) ,7) ) ,-5) |(((X+transpose(transpose(transpose(X,4) ,4) ,12) ) +transpose((((X+X) +arpeggio(X) ) +transpose(((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ) ,7) ) |(arpeggio((X+X) ) +transpose(shuffle(arpeggio(X) ) ,7) ) ) ) ,4) ) +transpose(((shuffle(transpose(((X|X) +transpose((X+transpose(X,12) ) ,12) ) ,-7) ) |(step((X+transpose(X,7) ) ,12) +transpose(transpose(step((echo(X,4,6) +transpose((X+transpose(X,7) ) ,12) ) ,12) ,-7) ,12) ) ) +transpose((shuffle(arpeggio(((echo(X,4,6) +transpose((X|X) ,4) ) +transpose(shuffle(X) ,7) ) ) ) +transpose(arpeggio(((transpose(X,-5) +transpose((X+X) ,12) ) +transpose((echo(X,4,6) +transpose(echo(shuffle(X) ,4,6) ,12) ) ,7) ) ) ,12) ) ,12) ) ,7) ) ) ,12) ) ,4,6) +transpose((((shuffle(step(transpose((step(X,12) +transpose(((X+X) +X) ,7) ) ,-7) ,12) ) +transpose((arpeggio((echo(((((X+transpose(X,7) ) +transpose(X,4) ) +transpose((X|X) ,7) ) +transpose(transpose(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) +transpose((transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ) |((transpose(X,-7) +transpose(step(X,12) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,-5) ,7) ) ) ,-5) ,12) ) ,4,6) +transpose((((transpose(shuffle(shuffle(shuffle(X) ) ) ,-5) +step(transpose((transpose((X+transpose(X,12) ) ,4) |(X|transpose(X,-5) ) ) ,4) ,12) ) +transpose(((((transpose(arpeggio(arpeggio(echo(transpose(X,4) ,4,6) ) ) ,-5) +transpose((((transpose(X,-5) +step(X,12) ) +transpose(step(echo(step(X,12) ,4,6) ,12) ,7) ) +transpose((echo(transpose(X,-5) ,4,6) +transpose(arpeggio(transpose(shuffle(X) ,-5) ) ,7) ) ,12) ) ,4) ) +transpose((transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,-5) |(echo(X,4,6) +transpose(X,12) ) ) ,7) ) +transpose((transpose(transpose(X,-7) ,-5) +(X|((X+transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ) ,4) ) +transpose((transpose(((X+transpose(((X+transpose(step(X,12) ,4) ) +transpose(transpose(X,-5) ,7) ) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,-5) ,7) ) ,-5) +transpose(arpeggio(shuffle(((X+transpose(transpose(X,-7) ,7) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,12) ) ) ) ,7) ) ,7) ) ,4) ) +transpose(transpose((((X+step(X,12) ) +transpose(echo(X,4,6) ,-5) ) +transpose((((echo((X+transpose(X,12) ) ,4,6) |step(arpeggio((X+X) ) ,12) ) +transpose(arpeggio(echo((X+transpose(X,7) ) ,4,6) ) ,4) ) +transpose((echo((X+transpose(X,12) ) ,4,6) +transpose(step(step((X+X) ,12) ,12) ,7) ) ,7) ) ,7) ) ,-5) ,7) ) ,7) ) ) +((((step(echo(((step(transpose(X,-7) ,12) +transpose(arpeggio((X+transpose(X,12) ) ) ,4) ) +transpose(step((arpeggio(X) +transpose((X|X) ,7) ) ,12) ,7) ) ,4,6) ,12) +transpose(transpose(transpose(transpose(X,4) ,4) ,-7) ,7) ) +transpose((((((transpose(X,4) +arpeggio(X) ) +transpose(step(shuffle(transpose(echo(X,4,6) ,4) ) ,12) ,4) ) +transpose(arpeggio((step(X,12) +transpose(arpeggio(echo(X,4,6) ) ,7) ) ) ,7) ) +transpose(arpeggio((step((X|X) ,12) |(step(echo(X,4,6) ,12) |step(echo(X,4,6) ,12) ) ) ) ,4) ) +transpose(((shuffle((((X+transpose(X,7) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,12) ) ) +transpose(arpeggio(transpose(transpose(X,-5) ,-5) ) ,4) ) +transpose(echo((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X|X) ,12) ) ,4,6) ,7) ) ,7) ) ,7) ) +transpose(echo(step(shuffle(step(X,12) ) ,12) ,4,6) ,4) ) +transpose(((((step(X,12) +transpose(echo(X,4,6) ,7) ) +transpose(echo(shuffle(arpeggio(X) ) ,4,6) ,4) ) +transpose(((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) |step(transpose(X,-5) ,12) ) ,7) ) |(arpeggio(arpeggio((step(X,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ) |(transpose(echo(X,4,6) ,-5) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((transpose(X,-7) +transpose(echo(X,4,6) ,12) ) ,7) ) +shuffle((X+transpose(X,12) ) ) ) ,12) ) ) ) ,7) ) ) ,12) ) +transpose(echo(transpose(step(step((X+transpose((X|X) ,12) ) ,12) ,12) ,-5) ,4,6) ,4) ) +transpose(((step(transpose((step((((X|X) +transpose(X,7) ) +transpose(step((shuffle(X) +transpose(X,7) ) ,12) ,7) ) ,12) +transpose(echo(echo(transpose(echo(X,4,6) ,4) ,4,6) ,4,6) ,7) ) ,4) ,12) |(((shuffle(shuffle((((X+transpose((X+transpose(X,7) ) ,12) ) |arpeggio(X) ) +transpose(transpose(arpeggio(X) ,-7) ,12) ) ) ) +transpose(echo(((echo(((((X+transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) +transpose(transpose(X,-7) ,12) ) ,4,6) +transpose((shuffle(arpeggio(X) ) +transpose(X,7) ) ,4) ) +transpose((transpose(transpose(X,4) ,-5) +((echo(step(X,12) ,4,6) +transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(shuffle(X) ,7) ) ) ,7) ) ,4,6) ,4) ) +transpose((step((X+X) ,12) +transpose((step(X,12) +transpose(transpose(X,-5) ,7) ) ,12) ) ,7) ) +transpose(shuffle(transpose(echo(((arpeggio((X+transpose(X,7) ) ) +transpose((arpeggio(X) |(echo(X,4,6) +(X+transpose(X,7) ) ) ) ,4) ) +transpose((X+X) ,7) ) ,4,6) ,-5) ) ,12) ) ) |((transpose((transpose(shuffle(((shuffle(arpeggio(X) ) +transpose(transpose(X,4) ,12) ) +transpose(transpose(echo(((arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) +(X+transpose(X,7) ) ) +transpose(((X+transpose((X+transpose(X,7) ) ,12) ) +transpose((transpose(X,-7) +transpose(X,7) ) ,7) ) ,12) ) ,4,6) ,4) ,7) ) ) ,4) +transpose(((arpeggio(((shuffle(transpose(echo(X,4,6) ,4) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(echo(step(X,12) ,4,6) ,4) ) +transpose((echo(X,4,6) +transpose(step(shuffle(X) ,12) ,12) ) ,7) ) ,4) ) +transpose(echo(((step(X,12) +transpose(X,4) ) +transpose((X+transpose(step(X,12) ,12) ) ,7) ) ,4,6) ,7) ) ) +transpose((echo(arpeggio((((X+transpose(step(X,12) ,4) ) +transpose(X,7) ) +(shuffle(X) +transpose(step(X,12) ,12) ) ) ) ,4,6) +(transpose(X,-7) +step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ,4) ) +transpose(((transpose(transpose(X,4) ,-5) +transpose(((step(X,12) +transpose(step(X,12) ,4) ) +transpose((transpose(X,-7) |transpose(X,4) ) ,7) ) ,4) ) +transpose(transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) ,7) ) ,7) ) ,7) ) ,4) +transpose(transpose(((arpeggio(shuffle(transpose(X,-7) ) ) +arpeggio(echo(((arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(step(transpose(transpose(X,4) ,-5) ,12) ,4) ) +transpose(transpose(((echo(X,4,6) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ,-7) ,7) ) ,4,6) ) ) +transpose(arpeggio((((echo(arpeggio(X) ,4,6) +transpose((echo(X,4,6) +transpose((X+transpose(X,7) ) ,7) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) +echo(echo(shuffle(X) ,4,6) ,4,6) ) ) ,7) ) ,-5) ,4) ) +transpose(step(arpeggio(arpeggio((((((X+X) +transpose(X,7) ) +transpose((X+X) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(arpeggio(shuffle(echo(X,4,6) ) ) ,12) ) ) ) ,12) ,7) ) ) ,7) ) ,4) ) +transpose(echo((shuffle(shuffle((((((((((X+transpose(X,12) ) |(X+transpose(X,12) ) ) +X) +transpose(echo(((X+transpose(X,12) ) +transpose((X+transpose(X,12) ) ,12) ) ,4,6) ,4) ) +transpose(((shuffle(((X+transpose(step(X,12) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) +transpose((transpose(X,-7) |shuffle(transpose(X,-5) ) ) ,4) ) +transpose(((((((X+X) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(transpose(X,4) ,12) ) ,7) ) ,7) ) +(step(((X+transpose(X,7) ) |arpeggio(X) ) ,12) +(((X+transpose(X,12) ) +transpose(transpose(arpeggio(X) ,4) ,4) ) +transpose((((X+transpose(X,12) ) +transpose((X|X) ,12) ) |(echo(X,4,6) +transpose(X,7) ) ) ,7) ) ) ) +transpose((((((X+transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) +transpose((echo((X|X) ,4,6) +transpose(arpeggio(shuffle(X) ) ,4) ) ,12) ) +transpose(((arpeggio((echo(transpose(X,4) ,4,6) +transpose(X,7) ) ) +transpose((((step((X+X) ,12) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) +((transpose(X,-7) +transpose(transpose(X,-5) ,7) ) +transpose((X|X) ,-5) ) ) +transpose((step(X,12) |((transpose(X,4) +transpose(X,4) ) +transpose(step(X,12) ,7) ) ) ,12) ) ,4) ) +transpose(((((transpose(X,4) +transpose((X|X) ,4) ) +transpose(X,7) ) +transpose(step(arpeggio(arpeggio(arpeggio(X) ) ) ,12) ,4) ) +transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,7) ) ,7) ) ,12) ) ,12) ) +transpose(echo((shuffle(transpose(X,-5) ) +transpose(((X+X) +transpose(X,-7) ) ,7) ) ,4,6) ,12) ) |((((step((X|step(X,12) ) ,12) +transpose(((echo(step((X+transpose(X,12) ) ,12) ,4,6) +transpose(echo((((X|X) +transpose(X,4) ) +transpose(X,7) ) ,4,6) ,12) ) +transpose((transpose(X,-5) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,7) ) ,4) ) +transpose(transpose(shuffle((X+X) ) ,4) ,7) ) +transpose((((echo(shuffle(X) ,4,6) +transpose(transpose(((X+transpose(X,12) ) +transpose(echo(X,4,6) ,12) ) ,-7) ,7) ) +transpose(transpose(step(shuffle(X) ,12) ,4) ,4) ) +transpose(step((step((X+transpose(X,12) ) ,12) +shuffle(transpose(X,-5) ) ) ,12) ,7) ) ,-7) ) +transpose(((shuffle(transpose(X,4) ) +transpose(X,12) ) +transpose((echo((X|X) ,4,6) +transpose(shuffle(X) ,12) ) ,12) ) ,12) ) ) ) ) +transpose(shuffle(transpose(echo(shuffle(step((step(transpose((X+transpose(X,7) ) ,-5) ,12) +transpose(shuffle(shuffle(transpose((X+transpose(X,12) ) ,-7) ) ) ,7) ) ,12) ) ,4,6) ,-7) ) ,12) ) ,4,6) ,7) ) +((echo(transpose(((((transpose((arpeggio(((X+transpose(X,12) ) +transpose(echo(X,4,6) ,12) ) ) +(X|(X|(X|X) ) ) ) ,4) +transpose(transpose(((transpose(X,-5) +transpose(echo(echo(X,4,6) ,4,6) ,4) ) +transpose((echo(X,4,6) +transpose(X,12) ) ,7) ) ,-5) ,4) ) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,7) ) +((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,7) ) ) +transpose(transpose((X+transpose(((X+transpose(X,12) ) +transpose(transpose(X,-5) ,7) ) ,7) ) ,-5) ,-5) ) ,7) ) +transpose(((transpose(arpeggio(((step(shuffle(step(X,12) ) ,12) +transpose(((((X|X) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) +transpose(step((X+X) ,12) ,12) ) ,4) ) +transpose((echo(X,4,6) +transpose((X+transpose(X,7) ) ,-7) ) ,7) ) ) ,-7) +transpose(((echo(((X|X) +transpose(X,12) ) ,4,6) +transpose(transpose((step(X,12) |transpose(step(transpose(X,4) ,12) ,-7) ) ,4) ,4) ) +transpose(echo(shuffle((X+transpose(shuffle(X) ,7) ) ) ,4,6) ,7) ) ,4) ) +transpose(shuffle(transpose((transpose(((X|X) +X) ,-7) +transpose(arpeggio((((X+transpose(X,12) ) +transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,7) ) ) ,12) ) ,-5) ) ,7) ) ,12) ) +transpose(((echo((((((transpose(arpeggio(transpose(X,4) ) ,-5) +transpose(echo(step(shuffle(X) ,12) ,4,6) ,12) ) +arpeggio(transpose(transpose(X,-7) ,4) ) ) |transpose((shuffle(step(X,12) ) |echo(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4,6) ) ,-5) ) +transpose(transpose(step((((arpeggio(arpeggio(X) ) |((X+X) |arpeggio(X) ) ) +transpose(((step(X,12) +((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) +echo((X|X) ,4,6) ) ,12) ,4) ,4) ) +transpose(step((((echo(X,4,6) +(X+transpose(X,12) ) ) |arpeggio(shuffle(X) ) ) |(transpose((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) +transpose((echo(X,4,6) |transpose(X,-7) ) ,7) ) ) ,12) ,7) ) ,4,6) +transpose((arpeggio((X+transpose(transpose(X,4) ,7) ) ) |echo((X+transpose((((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,7) ) +((shuffle(X) +transpose(X,4) ) +transpose((X+X) ,7) ) ) ,12) ) ,4,6) ) ,4) ) +transpose(step(((shuffle((step(X,12) +transpose(((step(shuffle((X+transpose(X,7) ) ) ,12) +transpose(echo(arpeggio(X) ,4,6) ,7) ) +transpose((transpose(X,4) +transpose(shuffle(((X+transpose(X,12) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,12) ) ,7) ) ,12) ) ) +transpose(((transpose(((X+X) +transpose(X,7) ) ,-5) +transpose((transpose((((X+transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,-5) +transpose((arpeggio(((X+transpose(X,7) ) +transpose(X,12) ) ) +transpose(transpose(X,-7) ,12) ) ,7) ) ,12) ) +step((echo(step((X+transpose(X,7) ) ,12) ,4,6) +transpose(transpose(transpose(((transpose(X,4) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ,4) ,12) ) ,12) ) ,12) ) +transpose(((transpose((transpose((X+transpose(X,12) ) ,4) +transpose(((X+transpose(X,7) ) +transpose(X,7) ) ,7) ) ,-5) +transpose((((((transpose(X,4) +transpose((X+X) ,4) ) +transpose(X,7) ) |(transpose(X,-5) +transpose(transpose(X,-7) ,12) ) ) +transpose(step(step(X,12) ,12) ,7) ) |X) ,7) ) +transpose(((((((arpeggio(X) +transpose(transpose(X,-5) ,7) ) +transpose(transpose((X+transpose(X,12) ) ,-7) ,12) ) +transpose(step(arpeggio(arpeggio(X) ) ,12) ,4) ) +transpose(arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,12) ) ) ,7) ) |transpose((step(X,12) +transpose(X,7) ) ,4) ) +transpose(((step((step(X,12) +transpose(echo(X,4,6) ,7) ) ,12) +transpose(transpose(step((X+transpose(X,12) ) ,12) ,4) ,4) ) +transpose(((transpose((X+transpose((X+transpose(X,7) ) ,7) ) ,4) +transpose(echo((((X+transpose(X,12) ) +transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4) ) +transpose(((X+transpose(X,12) ) +transpose(X,7) ) ,7) ) ,7) ) ,7) ) ,7) ) ,12) ) ,12) ,7) ) ,12) ) ,-7) ,4,6) +transpose((step((((echo((transpose(arpeggio(X) ,-5) +((X+transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ,4,6) +transpose(transpose((((((X+transpose(X,12) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(arpeggio(shuffle(X) ) ,12) ) +transpose((((X+transpose(X,12) ) +transpose(transpose(X,-7) ,7) ) +transpose(((transpose(X,-7) +transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ) ,-7) ,12) ) +transpose((((shuffle(X) +transpose(X,7) ) +transpose(shuffle(echo(X,4,6) ) ,7) ) +transpose((((arpeggio((X+X) ) |arpeggio(X) ) +transpose(((X+(X|X) ) +transpose(transpose(X,-5) ,12) ) ,4) ) +transpose(transpose(X,-7) ,7) ) ,12) ) ,7) ) +transpose(((((transpose(((((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,7) ) +transpose((((X|X) +transpose(X,7) ) |step(X,12) ) ,4) ) +transpose(step((echo(X,4,6) +transpose(X,7) ) ,12) ,7) ) ,-7) +transpose(step(transpose((X+transpose((X|X) ,7) ) ,-7) ,12) ,12) ) +transpose((step(step(arpeggio(((X+X) +transpose(X,12) ) ) ,12) ,12) +transpose(((transpose(X,-7) +((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(((X+transpose(X,12) ) |(X+transpose(X,12) ) ) ,12) ) ,7) ) ,7) ) +transpose(transpose(echo((arpeggio((X|X) ) |((transpose(X,-7) +transpose(((X+transpose((step(X,12) +transpose(X,12) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,4) ) +transpose(((X+transpose(X,12) ) +transpose(((X+transpose(X,12) ) +transpose(shuffle(X) ,12) ) ,12) ) ,7) ) ) ,4,6) ,4) ,4) ) +transpose((((step((X|X) ,12) +transpose(X,12) ) |(X+transpose(X,7) ) ) +transpose(echo(arpeggio(((transpose(X,4) +transpose(echo(X,4,6) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,4,6) ,12) ) ,7) ) ,7) ) ,12) +transpose(step((arpeggio(shuffle(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) ,4) ) ) +transpose(step(echo((step(((X+transpose(X,7) ) +echo(X,4,6) ) ,12) +transpose((step(step(transpose(transpose(X,4) ,-5) ,12) ,12) +transpose((((X+transpose((X+transpose(X,12) ) ,12) ) +((transpose(X,-7) +transpose(X,4) ) +transpose(X,7) ) ) +(((X+transpose(X,12) ) +transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ) ,12) ) ,7) ) ,4,6) ,12) ,7) ) ,12) ,-5) ) ,12) ) |transpose((transpose(step((echo((((step(arpeggio(arpeggio(X) ) ,12) +transpose(((((X+transpose(X,7) ) +transpose((X+transpose(step(X,12) ,12) ) ,4) ) +transpose(arpeggio(X) ,7) ) |(transpose(step(X,12) ,-5) +transpose(X,7) ) ) ,12) ) +transpose(echo((((X+transpose(X,7) ) |X) +(((X+transpose(X,7) ) +transpose(transpose(X,4) ,7) ) |((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ) ) ,4,6) ,4) ) +transpose(((arpeggio((X|step(X,12) ) ) +transpose((shuffle(X) |(transpose(X,-7) +(X+transpose(X,12) ) ) ) ,4) ) +transpose(echo((shuffle(X) +transpose((((X+transpose(X,7) ) +transpose(((echo(X,4,6) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) ,12) ) ,4,6) ,7) ) ,7) ) ,4,6) +transpose(transpose(step(((shuffle((transpose(X,-7) +transpose(X,7) ) ) +transpose(((transpose(X,4) +transpose(arpeggio(step(X,12) ) ,12) ) +transpose(step(X,12) ,12) ) ,4) ) +transpose((X|X) ,7) ) ,12) ,-7) ,7) ) ,12) ,-7) +transpose(((transpose(transpose(((((transpose((step(X,12) +transpose(X,-5) ) ,4) |step(X,12) ) +transpose(transpose((((((step(X,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,7) ) +transpose(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(transpose(shuffle(X) ,4) ,7) ) ,-5) ,4) ) +transpose(shuffle(transpose(X,-5) ) ,7) ) +transpose(((echo(shuffle(arpeggio(transpose((X+X) ,-5) ) ) ,4,6) +transpose(arpeggio((transpose(step(transpose(X,4) ,12) ,-5) +transpose(((transpose(X,-7) +transpose(((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) ) +transpose((shuffle(X) +transpose(X,7) ) ,7) ) ,12) ) ) ,4) ) +transpose((((shuffle(X) +transpose((X|arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,7) ) +transpose(((echo(X,4,6) +transpose((step(X,12) +transpose(arpeggio(X) ,12) ) ,4) ) +transpose(echo((X+transpose(X,12) ) ,4,6) ,7) ) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ,7) ) ,7) ) ,-7) ,-7) +transpose(((step((arpeggio(arpeggio(transpose((transpose(X,4) +transpose((((X+transpose(X,12) ) +transpose(arpeggio(X) ,12) ) +transpose((X+transpose(X,12) ) ,7) ) ,12) ) ,-7) ) ) +transpose((step(arpeggio(((X+transpose(X,7) ) |step(X,12) ) ) ,12) |arpeggio(arpeggio(echo(echo(X,4,6) ,4,6) ) ) ) ,12) ) ,12) +transpose(((arpeggio((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,4) ) +transpose(transpose(X,4) ,7) ) +transpose(step(X,12) ,12) ) ) +transpose((step(arpeggio(step(X,12) ) ,12) +transpose((arpeggio(arpeggio(((((X|X) +transpose(shuffle(X) ,4) ) +transpose(echo(X,4,6) ,7) ) +transpose((X+transpose(echo(X,4,6) ,12) ) ,12) ) ) ) +transpose(((echo((X+transpose(X,12) ) ,4,6) +(((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) ) +shuffle((X+transpose(X,12) ) ) ) ,4) ) ,7) ) ,12) ) |transpose(step(((echo(X,4,6) +transpose(echo(X,4,6) ,4) ) +(((((X+transpose((X+transpose(X,12) ) ,12) ) +transpose(shuffle(step(X,12) ) ,12) ) +transpose((transpose(X,4) +shuffle(X) ) ,12) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,12) ) +transpose(shuffle((((X+transpose(X,4) ) +transpose(X,7) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,7) ) ) ,12) ,4) ) ,4) ) +transpose(arpeggio(((step(step(((((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,12) ) ,12) ) +echo(X,4,6) ) +transpose(transpose(X,-5) ,7) ) +transpose(((X+transpose((X+transpose(X,7) ) ,7) ) +transpose((X+transpose(X,12) ) ,12) ) ,12) ) +transpose((((transpose((echo(X,4,6) +transpose(arpeggio(X) ,7) ) ,-5) +transpose(transpose((((X|X) +transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ) +transpose(shuffle(X) ,7) ) +transpose((((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,4) ) +transpose((transpose(X,-5) |echo(X,4,6) ) ,7) ) ,12) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,-5) ) ,7) ) ,12) ,12) +transpose(((((((arpeggio((X+transpose(X,12) ) ) +transpose(shuffle(((X|X) |X) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) +transpose(step(X,12) ,7) ) ) +transpose(echo(step(((arpeggio((X+transpose((X+transpose(X,12) ) ,7) ) ) +transpose(((shuffle((X+transpose(X,12) ) ) |step((X+transpose(X,12) ) ,12) ) +transpose(((transpose(X,-7) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose((echo((shuffle(X) +transpose((X+transpose(X,7) ) ,12) ) ,4,6) +transpose(step((X+transpose(X,12) ) ,12) ,7) ) ,7) ) ,12) ,4,6) ,7) ) +transpose((step(((X+transpose(X,12) ) +transpose((X+transpose(X,12) ) ,12) ) ,12) +transpose(((((X|(X+transpose(step(X,12) ,7) ) ) +transpose((shuffle(X) +transpose(arpeggio(X) ,12) ) ,4) ) +transpose(((X+transpose(X,7) ) +transpose(X,7) ) ,7) ) +transpose((X+transpose(X,12) ) ,7) ) ,12) ) ,4) ) +transpose((((((((X+X) +transpose((X+transpose(X,7) ) ,12) ) |transpose(X,4) ) +transpose((((step(X,12) +transpose(shuffle(X) ,7) ) +transpose((echo(X,4,6) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(arpeggio(X) ,7) ) ,7) ) +transpose((X+transpose(X,7) ) ,12) ) +transpose((step(echo((X+transpose(X,7) ) ,4,6) ,12) +transpose((X|echo(X,4,6) ) ,7) ) ,4) ) +transpose(transpose((X+transpose(arpeggio(X) ,7) ) ,4) ,7) ) ,7) ) ,4) ) +transpose((step(((((((transpose(X,4) +transpose(X,4) ) +transpose(X,7) ) +transpose(X,12) ) +transpose(arpeggio(((X+X) +transpose(X,12) ) ) ,4) ) +transpose(transpose((X+transpose(echo(X,4,6) ,12) ) ,-7) ,7) ) +transpose(transpose(step(X,12) ,-5) ,7) ) ,12) +transpose(transpose(shuffle((shuffle(step(X,12) ) |arpeggio(X) ) ) ,-7) ,12) ) ,7) ) ) ,7) ) ,4) ) +transpose(shuffle(echo((step((arpeggio(X) +transpose(arpeggio(X) ,12) ) ,12) +transpose(step(step((transpose(X,-7) +transpose((transpose(X,4) |shuffle(X) ) ,12) ) ,12) ,12) ,7) ) ,4,6) ) ,7) ) ,7) ) ,-5) ) )
random seed used was 112952474

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