Tune Toys : Expresso

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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.

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After 18 generations the expression "X" became this:

step(((((((transpose((transpose((transpose(transpose(transpose(X,-7) ,-5) ,-5) |((X|(X+transpose(X,12) ) ) +arpeggio(transpose(X,4) ) ) ) ,-7) +transpose(arpeggio(transpose(step((X+transpose(X,7) ) ,12) ,4) ) ,-5) ) ,-7) |transpose((transpose(transpose(transpose(echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,4,6) ,-5) ,-5) ,-7) |(((shuffle(X) +transpose((X+X) ,12) ) +transpose((((X+X) +transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ) +transpose(step(transpose(X,4) ,12) ,12) ) ) ,4) ) +transpose((arpeggio(echo(((((((X+transpose(arpeggio(X) ,4) ) +transpose((X+X) ,7) ) |transpose((X+transpose(X,7) ) ,4) ) |shuffle(transpose(X,-5) ) ) +transpose((echo(echo((X|X) ,4,6) ,4,6) +transpose(((transpose(X,-7) +(X+transpose(X,7) ) ) +((((X|X) +transpose(shuffle(X) ,4) ) +transpose((X+X) ,7) ) +transpose(transpose(X,4) ,7) ) ) ,12) ) ,7) ) |(echo(X,4,6) |transpose((((X+transpose((X+X) ,7) ) +transpose((((X|X) +transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,-5) ) ) ,4,6) ) +(step(transpose(transpose((step(echo(X,4,6) ,12) |echo((((((shuffle(X) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(((X+X) +transpose(X,-7) ) ,7) ) |echo(transpose(X,-5) ,4,6) ) ,4,6) ) ,-7) ,4) ,12) +(transpose(step((transpose(transpose(((X+X) +transpose(transpose(X,-5) ,12) ) ,-7) ,-5) +transpose(transpose((X+(X|X) ) ,-5) ,12) ) ,12) ,-5) +transpose((((step(transpose(X,4) ,12) +transpose(transpose(X,4) ,12) ) |shuffle(transpose(X,-5) ) ) |step(transpose(transpose((echo((X+transpose(X,12) ) ,4,6) +shuffle(X) ) ,4) ,-7) ,12) ) ,-5) ) ) ) ,4) ) +transpose(shuffle(shuffle(arpeggio((transpose(echo(transpose(transpose((transpose(X,-5) +(X+X) ) ,-7) ,-7) ,4,6) ,4) +transpose(((X+X) +transpose(transpose(transpose(transpose(X,4) ,-7) ,4) ,12) ) ,12) ) ) ) ) ,7) ) |(transpose((transpose((arpeggio((X+transpose(X,7) ) ) +transpose(step(transpose(echo(((X+transpose(X,7) ) |(X+X) ) ,4,6) ,-7) ,12) ,4) ) ,-7) +transpose(transpose(echo(shuffle(step((((((X+X) +transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,12) ) ,4,6) ,-5) ,-5) ) ,-7) |transpose(transpose(arpeggio(step((((echo(X,4,6) +transpose(transpose(transpose(X,-7) ,-5) ,4) ) +transpose(transpose(X,-5) ,7) ) +(arpeggio(transpose(shuffle(X) ,4) ) |X) ) ,12) ) ,-7) ,-5) ) ) |((((((step((((transpose(X,-5) +transpose(echo(transpose(transpose(X,-7) ,-7) ,4,6) ,4) ) +transpose(transpose(transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ,4) ,7) ) |echo((step((X+X) ,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4,6) ) ,12) +echo(step(echo(X,4,6) ,12) ,4,6) ) +echo((((transpose(((X|X) +(transpose(X,4) |transpose(X,-5) ) ) ,-5) +transpose(transpose(((((step(X,12) |X) +transpose((X+transpose(X,12) ) ,7) ) |echo(X,4,6) ) |arpeggio(arpeggio(transpose(transpose(X,4) ,4) ) ) ) ,-7) ,12) ) +transpose(arpeggio(((transpose(X,-5) |(((X|X) |(X+X) ) +transpose(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-7) ,7) ) ) +transpose(transpose(transpose(X,-7) ,4) ,7) ) ) ,7) ) +transpose(((transpose(arpeggio(transpose((transpose(X,-7) +transpose((X|(X+X) ) ,12) ) ,-7) ) ,-5) +transpose(transpose((arpeggio(arpeggio(X) ) +transpose(arpeggio(arpeggio(X) ) ,12) ) ,-7) ,7) ) |echo(step((arpeggio(X) +((transpose((transpose(X,-7) +(X+X) ) ,4) +transpose(((X+transpose(X,12) ) +transpose((X+transpose(X,7) ) ,12) ) ,4) ) +transpose(shuffle((transpose(X,-5) +transpose((X+transpose(X,7) ) ,7) ) ) ,7) ) ) ,12) ,4,6) ) ,7) ) ,4,6) ) +transpose((((transpose(transpose(transpose(X,-5) ,-5) ,4) +transpose((transpose(X,-7) +((X+transpose(X,7) ) +transpose((X|X) ,7) ) ) ,4) ) +transpose(transpose(X,-7) ,7) ) +(transpose(transpose(X,4) ,4) +transpose(transpose((X|X) ,-7) ,4) ) ) ,7) ) +transpose(transpose(transpose(arpeggio(shuffle((transpose((echo((step((transpose(X,-5) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) +transpose((transpose((X|X) ,4) +step(X,12) ) ,7) ) ,4,6) +transpose((X|X) ,12) ) ,-7) +transpose((shuffle(transpose(X,-7) ) +((X+transpose(X,7) ) +transpose(shuffle(X) ,7) ) ) ,-5) ) ) ) ,4) ,-7) ,12) ) +transpose(step(((transpose(step((transpose(X,-7) +transpose(transpose((transpose(X,-7) |(X+transpose((X+X) ,12) ) ) ,-5) ,-7) ) ,12) ,-7) +transpose((arpeggio((transpose(step(transpose((shuffle(X) +transpose(step(X,12) ,12) ) ,4) ,12) ,-5) +transpose(transpose((step(step(X,12) ,12) +arpeggio(X) ) ,-5) ,-5) ) ) |transpose((((((transpose((X+transpose(X,12) ) ,4) +transpose(((X+transpose(X,7) ) +transpose((X+X) ,12) ) ,4) ) +transpose(transpose(echo(X,4,6) ,-5) ,7) ) +(((transpose(X,-7) |X) |(X|X) ) +transpose((((((X+transpose(X,7) ) +transpose(X,-5) ) +transpose(X,12) ) +transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ,7) ) ) +((transpose(transpose(echo(step(X,12) ,4,6) ,-7) ,-5) |step(X,12) ) +transpose(echo((step(X,12) +(step(X,12) +transpose((X|X) ,7) ) ) ,4,6) ,12) ) ) |((shuffle((((transpose(X,-7) +transpose(X,12) ) +transpose((X|X) ,4) ) +transpose(transpose(X,4) ,7) ) ) +transpose(X,7) ) +transpose((((((X+X) +transpose((X+transpose(X,12) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(echo((X+transpose(arpeggio(X) ,12) ) ,4,6) ,12) ) +transpose((shuffle(step(X,12) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) ,12) ) ,12) ) ) ,4) ) ,4) ) +transpose((arpeggio(echo(transpose((X|X) ,-7) ,4,6) ) +transpose(((shuffle(((transpose(X,-7) +transpose((shuffle(transpose(X,-5) ) |shuffle(X) ) ,12) ) |transpose((((((X|X) +transpose(step((X+transpose(X,12) ) ,12) ,4) ) +transpose(X,7) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ) +transpose(transpose(X,-5) ,7) ) ,-7) ) ) |transpose(transpose(transpose(X,-5) ,4) ,4) ) +transpose(step(step(transpose(transpose(transpose(X,-7) ,4) ,-5) ,12) ,12) ,12) ) ,12) ) ,7) ) ,12) ,4) ) +transpose(((transpose((((((transpose(((step((X+transpose(X,7) ) ,12) +transpose(transpose(step(step((X|transpose(X,-5) ) ,12) ,12) ,-7) ,4) ) +transpose(step(((step(X,12) |(X|X) ) +echo(transpose(transpose(X,-5) ,-5) ,4,6) ) ,12) ,7) ) ,4) +transpose(shuffle((transpose(arpeggio(arpeggio(echo(X,4,6) ) ) ,-5) +(((shuffle(arpeggio(X) ) +(X|X) ) +transpose(X,12) ) +echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4,6) ) ) ) ,4) ) +transpose(shuffle((transpose(transpose(X,4) ,-5) +transpose((transpose(X,-5) |transpose(X,-5) ) ,12) ) ) ,7) ) |((step(transpose((transpose(transpose(X,4) ,-7) +transpose((shuffle(X) +transpose(echo(X,4,6) ,12) ) ,7) ) ,4) ,12) +transpose(((arpeggio(step(X,12) ) +transpose((X+transpose((transpose((X+transpose(X,12) ) ,4) +transpose(X,-5) ) ,7) ) ,12) ) |transpose(((echo(X,4,6) +transpose(transpose(X,-5) ,4) ) +transpose((transpose(X,-7) |(X+X) ) ,7) ) ,-7) ) ,4) ) +transpose(transpose(shuffle((X|X) ) ,4) ,7) ) ) |shuffle(echo(((X+X) |arpeggio(transpose(X,4) ) ) ,4,6) ) ) |((transpose(transpose((transpose((X|X) ,-5) |((arpeggio(shuffle(X) ) +echo(step(X,12) ,4,6) ) +transpose(transpose((X+transpose(X,12) ) ,-5) ,7) ) ) ,4) ,-5) |((transpose((transpose((X+transpose(X,12) ) ,4) +transpose(transpose((X+X) ,4) ,7) ) ,4) +transpose(transpose(X,-7) ,4) ) +transpose(echo((((transpose(X,4) +transpose(transpose(transpose(X,4) ,-7) ,4) ) +transpose(transpose(X,-5) ,7) ) +arpeggio((X+transpose(X,7) ) ) ) ,4,6) ,7) ) ) +((step((arpeggio((X+transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,12) ) ,12) ) ) +transpose(((X+X) |X) ,7) ) ,12) +echo((shuffle(transpose(X,-7) ) |(((transpose(X,-5) |X) +transpose((X+transpose(X,7) ) ,-5) ) |(X+X) ) ) ,4,6) ) +(transpose(((X|X) |arpeggio(X) ) ,4) +(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,12) ) |echo(step(X,12) ,4,6) ) |arpeggio(X) ) ) ) ) ) ,4) +(arpeggio(shuffle(echo(step(X,12) ,4,6) ) ) +transpose(transpose(transpose(transpose(echo(X,4,6) ,4) ,4) ,4) ,12) ) ) +transpose(transpose((transpose(((shuffle(X) +shuffle((X+X) ) ) +transpose(step(shuffle(transpose((shuffle(X) +transpose(X,4) ) ,4) ) ,12) ,7) ) ,4) |(transpose((X+(transpose(transpose((X+X) ,-5) ,4) +(arpeggio(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(arpeggio(X) ,7) ) ) +((X|X) +transpose(X,7) ) ) ) ) ,-7) +transpose(transpose((X+transpose(X,7) ) ,-7) ,12) ) ) ,4) ,7) ) ,7) ) ) +(((echo(transpose(transpose((((transpose((transpose(((transpose(X,-5) +step(X,12) ) +step(X,12) ) ,4) |((echo(transpose(X,4) ,4,6) +transpose(shuffle((transpose(X,-5) |transpose(X,-7) ) ) ,4) ) +transpose(X,7) ) ) ,-5) +transpose(step((((shuffle(X) +(X+X) ) +echo(shuffle(transpose(X,-5) ) ,4,6) ) +transpose(transpose(transpose((X|X) ,-7) ,-5) ,7) ) ,12) ,4) ) +transpose(transpose((transpose((step(X,12) |X) ,-7) +transpose(transpose(echo(X,4,6) ,4) ,4) ) ,-7) ,7) ) +transpose(step((echo(arpeggio(((shuffle(X) +transpose((X|X) ,12) ) +transpose(X,7) ) ) ,4,6) +transpose((X+transpose(X,12) ) ,7) ) ,12) ,7) ) ,-5) ,-7) ,4,6) |shuffle(arpeggio(((transpose((((X+X) +transpose(X,12) ) +X) ,4) +transpose(echo(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(step(X,12) ,7) ) ,4,6) ,12) ) +(((transpose(echo(transpose(((X+transpose(X,7) ) +transpose((arpeggio((X+X) ) |(X+transpose(X,7) ) ) ,7) ) ,-7) ,4,6) ,-5) +transpose(arpeggio((((X|(X|X) ) +(X+transpose(((X+X) +transpose(transpose(X,-5) ,7) ) ,12) ) ) +X) ) ,4) ) +transpose((((echo(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4,6) +transpose(transpose(transpose(transpose(X,-7) ,4) ,4) ,4) ) |(((transpose(shuffle(X) ,-5) +transpose((X|X) ,4) ) +transpose((shuffle((X+transpose(X,12) ) ) |(transpose(X,4) +X) ) ,7) ) +transpose((X+(X|transpose(X,-5) ) ) ,12) ) ) |(transpose((((((X+transpose(X,4) ) +transpose(X,7) ) |X) +transpose((X+transpose(X,12) ) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ,-7) +transpose(transpose(((X+transpose(X,7) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ,-7) ,4) ) ) ,7) ) +(transpose(shuffle(step(transpose(transpose(X,-5) ,4) ,12) ) ,-7) |arpeggio(transpose(transpose(X,-7) ,-7) ) ) ) ) ) ) ) +((arpeggio(step(transpose(shuffle(((transpose(X,-7) |(X|X) ) +transpose(transpose(step(((transpose(X,-5) |shuffle(X) ) +step(X,12) ) ,12) ,-5) ,12) ) ) ,4) ,12) ) +transpose((echo(((transpose((transpose(transpose((X|((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,-7) ,-5) |((transpose((X+X) ,-5) +((X+transpose((X+X) ,4) ) +transpose(X,7) ) ) +transpose(((X+transpose((X+transpose(X,7) ) ,7) ) |(transpose(X,-5) +transpose(X,-7) ) ) ,7) ) ) ,4) +transpose(((echo((((((transpose(arpeggio(X) ,4) +transpose(X,4) ) +transpose(transpose(transpose(X,4) ,4) ,7) ) +transpose((((X+transpose(X,7) ) |X) +transpose(((step(((X+transpose(X,7) ) +transpose(step(X,12) ,7) ) ,12) +transpose((transpose(X,4) +transpose(X,7) ) ,4) ) +transpose(step(((X+X) +transpose(transpose(X,-5) ,7) ) ,12) ,7) ) ,12) ) ,4) ) +transpose((echo(transpose((echo(X,4,6) |X) ,-7) ,4,6) |((X+X) +transpose(X,12) ) ) ,7) ) |(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((transpose((X+X) ,-7) |(transpose(X,-7) |X) ) ,7) ) +transpose(echo(((X+transpose((X+X) ,7) ) +transpose((X+X) ,7) ) ,4,6) ,4) ) +transpose(echo((arpeggio(X) |X) ,4,6) ,7) ) ) ,4,6) +transpose(((transpose(transpose(((step(X,12) +((X+transpose(X,12) ) +X) ) +transpose(((transpose(X,-7) +transpose((X+transpose(X,7) ) ,7) ) |(X+transpose(arpeggio(X) ,7) ) ) ,7) ) ,-7) ,4) +transpose(transpose(shuffle(transpose(X,-7) ) ,-7) ,4) ) +transpose((echo(X,4,6) +transpose(arpeggio((X+transpose(X,7) ) ) ,4) ) ,7) ) ,4) ) +transpose((transpose(step(transpose(X,4) ,12) ,-5) |(transpose((transpose(((transpose(X,4) +transpose((X|X) ,4) ) +transpose(arpeggio(X) ,7) ) ,-7) +transpose(echo((X+X) ,4,6) ,12) ) ,-5) |transpose((X+X) ,4) ) ) ,7) ) ,4) ) +transpose((step((((shuffle(X) +transpose(X,-5) ) +arpeggio((X+transpose((X+X) ,12) ) ) ) +transpose(((arpeggio(shuffle(shuffle(X) ) ) +transpose(transpose(((X+transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,-5) ,12) ) +step((shuffle(X) +(X+transpose(X,7) ) ) ,12) ) ,4) ) ,12) |(echo((shuffle(((X|((X+transpose(X,4) ) +transpose(X,7) ) ) |(X+transpose(X,12) ) ) ) +transpose(transpose(step(echo(X,4,6) ,12) ,-7) ,7) ) ,4,6) +transpose((((((transpose(X,-5) |X) +transpose(transpose(arpeggio((X+transpose(X,4) ) ) ,-5) ,4) ) +transpose(transpose(transpose(transpose((X|X) ,-7) ,-5) ,-5) ,7) ) +transpose((transpose((X+X) ,-7) +((step(X,12) |transpose(X,-7) ) +transpose((transpose(X,4) +transpose(transpose(echo(X,4,6) ,4) ,7) ) ,12) ) ) ,4) ) +transpose((transpose(((X|(transpose(X,-5) |(X+transpose(X,12) ) ) ) +(X|((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,-5) +transpose((((X+X) |(X+X) ) +((((X+transpose(X,7) ) +transpose(X,7) ) +transpose(((arpeggio(step(X,12) ) +transpose(transpose((X+X) ,4) ,4) ) +transpose(arpeggio(transpose(X,-5) ) ,7) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,12) ) ,7) ) ,7) ) ) ,7) ) ,4,6) +transpose(arpeggio(echo(arpeggio((((((transpose(X,-5) +transpose(arpeggio(X) ,7) ) +transpose(transpose(shuffle(X) ,-7) ,4) ) +transpose(((X|X) +(X+transpose(arpeggio(X) ,7) ) ) ,7) ) +transpose(echo(transpose(X,-5) ,4,6) ,12) ) +transpose(transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(step(transpose(X,-7) ,12) ) ,12) ) +echo(transpose(((X+transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,-7) ,4,6) ) ,4) ,7) ) ) ,4,6) ) ,7) ) ,4) ) +transpose(transpose((shuffle(arpeggio((((transpose(((transpose(X,-5) +transpose(X,4) ) +transpose(X,7) ) ,4) +(((transpose(X,4) +transpose((X+X) ,12) ) +transpose(transpose(X,4) ,4) ) +transpose(echo(X,4,6) ,7) ) ) +transpose(((shuffle(arpeggio(X) ) +transpose(((X|arpeggio(X) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +(X|X) ) ,12) ) ,4) ) +transpose((transpose(X,4) +transpose(transpose(arpeggio((X+transpose(X,12) ) ) ,-5) ,7) ) ,7) ) ,4) ) +transpose(shuffle((transpose(transpose(X,-5) ,4) +transpose((X+transpose(X,7) ) ,-5) ) ) ,7) ) ) ) +transpose((step((transpose(((shuffle(transpose(X,4) ) +transpose(X,4) ) +transpose(((X|X) +transpose(transpose(X,4) ,7) ) ,7) ) ,4) +((X|X) |X) ) ,12) +step(arpeggio((((arpeggio((X+transpose(X,12) ) ) +transpose(X,7) ) +transpose(transpose(transpose(X,4) ,-7) ,4) ) +transpose(transpose(X,4) ,7) ) ) ,12) ) ,12) ) ,-5) ,7) ) ) +transpose((transpose((((((((X+transpose(X,12) ) +transpose((X+transpose(arpeggio(X) ,12) ) ,12) ) +((X+transpose(X,12) ) |arpeggio(echo(transpose(X,-7) ,4,6) ) ) ) +transpose(transpose((X+transpose(X,7) ) ,-7) ,12) ) +transpose(transpose((transpose((shuffle(X) +transpose((((X+transpose(X,12) ) +step(((X+transpose(X,12) ) +transpose(transpose(X,-5) ,7) ) ,12) ) +transpose(step(echo((X+transpose(X,12) ) ,4,6) ,12) ,12) ) ,7) ) ,-7) |((X+transpose(transpose(transpose(X,-5) ,-5) ,12) ) +transpose((X+transpose(X,7) ) ,4) ) ) ,-5) ,7) ) +transpose((((step(step((shuffle(transpose(X,-7) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ,12) ,12) +transpose(step(arpeggio((transpose(shuffle(X) ,-7) |transpose(echo(echo((X+transpose(X,12) ) ,4,6) ,4,6) ,4) ) ) ,12) ,7) ) +transpose(echo(transpose(((X+transpose((X+X) ,12) ) +transpose(X,-5) ) ,4) ,4,6) ,4) ) +transpose((arpeggio(((step(X,12) +transpose(shuffle(X) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) |transpose(echo(transpose(X,4) ,4,6) ,-5) ) ,7) ) ,12) ) +transpose(((echo(((echo(transpose(X,4) ,4,6) |(X+X) ) +transpose(echo((((X+transpose(echo(X,4,6) ,12) ) +transpose(((X|X) +X) ,4) ) +transpose(X,7) ) ,4,6) ,7) ) ,4,6) +transpose((shuffle((((transpose(X,-7) +transpose(transpose((X|X) ,4) ,4) ) +transpose(transpose(X,-7) ,7) ) +transpose((((X|X) +(X+transpose(X,12) ) ) +transpose(shuffle(X) ,7) ) ,7) ) ) +transpose(arpeggio(transpose(transpose((X|X) ,-5) ,4) ) ,12) ) ,4) ) +transpose(step(((shuffle((transpose((X+X) ,-7) +transpose((X+transpose(X,7) ) ,7) ) ) +transpose(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) ,12) ) +transpose(echo(step(((X+transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,12) ,4,6) ,-5) ) ,12) ,7) ) ,7) ) ,-5) +transpose(step((((step(step((echo(step(((X|X) |(X+X) ) ,12) ,4,6) |(transpose((transpose(X,-7) +transpose(shuffle(echo(X,4,6) ) ,12) ) ,4) +transpose((X+transpose(X,12) ) ,4) ) ) ,12) ,12) +arpeggio((((transpose(X,-5) +transpose(((transpose((X|X) ,-5) +transpose((((X+X) +transpose(transpose(X,-5) ,4) ) +transpose((X|X) ,7) ) ,7) ) +((X+X) +transpose(X,-7) ) ) ,7) ) +transpose((((shuffle(X) +((X+transpose(X,4) ) +transpose(X,7) ) ) +echo(transpose(X,-7) ,4,6) ) |shuffle(arpeggio((X+X) ) ) ) ,4) ) +transpose(arpeggio((transpose(shuffle(transpose(X,4) ) ,-5) +transpose((transpose(X,4) |(X+transpose((X+X) ,12) ) ) ,4) ) ) ,7) ) ) ) |step(arpeggio(((echo(shuffle(X) ,4,6) +transpose((transpose(transpose(transpose(((arpeggio(X) +transpose(arpeggio(X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,-7) ,4) ,4) |(((((X+transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,4) ,7) ) +(transpose(X,-7) |step(X,12) ) ) +transpose(step(X,12) ,12) ) +transpose(arpeggio((transpose((X+X) ,4) |shuffle(transpose(X,-7) ) ) ) ,12) ) ) ,4) ) +transpose(((shuffle(echo(((X+transpose(X,12) ) +X) ,4,6) ) +transpose((((echo(X,4,6) +(arpeggio(X) |X) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,4) ) +transpose((((((X+transpose(X,12) ) +transpose((X+X) ,4) ) +transpose(X,7) ) +shuffle(transpose(X,4) ) ) |transpose((X+transpose(X,12) ) ,-5) ) ,7) ) ,4) ) +transpose(step(((shuffle(X) +transpose(shuffle(transpose(X,-5) ) ,4) ) +transpose((((X|X) +transpose(transpose(X,4) ,4) ) +transpose(transpose(X,-7) ,7) ) ,7) ) ,12) ,7) ) ,7) ) ) ,12) ) +transpose((transpose(transpose((transpose(shuffle(shuffle(((X|X) |(X+transpose(X,12) ) ) ) ) ,4) |(transpose(transpose(X,-5) ,-5) |(arpeggio(transpose((X+transpose((X+transpose(X,7) ) ,7) ) ,-7) ) |step(transpose(transpose(X,-7) ,4) ,12) ) ) ) ,4) ,4) +arpeggio(((((echo((shuffle(X) +transpose((X|X) ,7) ) ,4,6) +transpose((X|X) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(step(X,12) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) |((((X|echo(X,4,6) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(transpose((((transpose(X,-7) +transpose(transpose(X,-5) ,4) ) +transpose((X+X) ,7) ) |((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ,-7) ,4) ) +transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +X) ,7) ) ) +((((X+transpose(X,12) ) +transpose(transpose(X,-7) ,12) ) +transpose((transpose(transpose(echo(X,4,6) ,4) ,-7) +transpose(transpose(((X|X) +(X+transpose(X,7) ) ) ,-7) ,12) ) ,4) ) +transpose((transpose(transpose(transpose(X,-5) ,-7) ,-5) |shuffle(step(X,12) ) ) ,7) ) ) ) ) ,12) ) ,12) ,7) ) ,-7) ) ) ,12)
random seed used was 239239952

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