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:
(shuffle(echo((((step((transpose(echo((((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,4) ) +transpose((X+X) ,7) ) ,4,6) ,4) +transpose(transpose(X,4) ,12) ) ,12) +transpose(((step(step(transpose(X,-7) ,12) ,12) |transpose(((transpose(X,-5) +transpose(arpeggio(X) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-7) ) +transpose((transpose((X|X) ,-5) +transpose(X,12) ) ,12) ) ,4) ) +transpose((transpose(step((X+transpose(X,-7) ) ,12) ,-7) +transpose(echo((((transpose(X,4) +transpose(X,7) ) +transpose(step((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ,12) ) +transpose(transpose(X,-7) ,7) ) ,4,6) ,12) ) ,7) ) |transpose((transpose((transpose(shuffle((X+transpose(X,7) ) ) ,4) +transpose(arpeggio(transpose(X,4) ) ,7) ) ,-5) +transpose((transpose((arpeggio((((transpose((X|X) ,-7) +transpose(echo(X,4,6) ,-7) ) |(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose(step(arpeggio(X) ,12) ,4) ) +transpose(((X+X) +transpose(X,-5) ) ,7) ) +transpose((transpose(X,4) +transpose(X,12) ) ,12) ) ) +transpose(((shuffle(X) +transpose((((transpose(X,-7) +X) +transpose(((X+X) +transpose(X,12) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ,7) ) ) +(transpose((((X+transpose(X,7) ) |X) +arpeggio((X+transpose(X,7) ) ) ) ,-7) |(((transpose((X+X) ,-7) +(arpeggio(X) +transpose(transpose(X,4) ,7) ) ) +transpose(transpose(transpose(transpose(X,-7) ,4) ,4) ,12) ) +((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ) ) ,-5) +transpose(((echo((shuffle(((((step(X,12) |X) +transpose((X+transpose(X,7) ) ,-5) ) +transpose(echo(step(arpeggio(transpose(X,4) ) ,12) ,4,6) ,4) ) +transpose(transpose((X+transpose(X,7) ) ,4) ,7) ) ) +transpose(transpose((((X+X) |arpeggio(X) ) +transpose(((X+transpose(X,7) ) |(X+X) ) ,12) ) ,-7) ,12) ) ,4,6) +transpose(echo(shuffle((echo(shuffle(X) ,4,6) |transpose(((step((X+transpose(X,7) ) ,12) +transpose(transpose(X,-7) ,4) ) +transpose(transpose(X,-7) ,7) ) ,4) ) ) ,4,6) ,4) ) +transpose((((transpose(transpose(transpose(transpose(X,4) ,4) ,4) ,-7) +(transpose(X,-5) +step(X,12) ) ) +transpose(((X+((X+transpose(X,4) ) +transpose(step(X,12) ,7) ) ) +transpose(shuffle((((transpose(X,4) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) +((X|X) +transpose(transpose(X,-5) ,12) ) ) ) ,12) ) ,4) ) +transpose((arpeggio((transpose(echo(X,4,6) ,-7) |arpeggio(X) ) ) +((step(X,12) +transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ) ,7) ) ,7) ) ,12) ) ,12) ) ,4) ) ,4,6) ) |arpeggio(((transpose((transpose(transpose(echo(((transpose(X,-5) +transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-5) ,-5) +transpose(shuffle((((transpose((((echo(X,4,6) |(X+transpose(X,7) ) ) |(((X+X) +transpose(transpose(transpose(X,4) ,-5) ,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) |arpeggio(transpose(transpose(arpeggio(X) ,4) ,-5) ) ) ,-7) +transpose(arpeggio(((arpeggio(transpose((X+transpose(X,12) ) ,-5) ) +transpose(echo(step(((X|X) +transpose(X,-5) ) ,12) ,4,6) ,4) ) +transpose(shuffle((X|(X+transpose(X,7) ) ) ) ,7) ) ) ,4) ) +transpose(transpose(transpose((X+X) ,-7) ,-7) ,7) ) +(transpose((step(shuffle(X) ,12) +echo(((transpose(X,-5) |echo(X,4,6) ) |((step(X,12) +transpose(X,12) ) +transpose(shuffle(X) ,12) ) ) ,4,6) ) ,-5) +transpose(transpose((transpose(arpeggio(((X+transpose(X,7) ) |(((X+transpose(X,4) ) +transpose(X,7) ) +shuffle(X) ) ) ) ,-5) +transpose(transpose(step((X+transpose(X,7) ) ,12) ,4) ,12) ) ,-5) ,7) ) ) ) ,4) ) ,-7) +transpose(((((transpose(shuffle((transpose(X,4) +((X+transpose(X,7) ) +transpose((X+X) ,12) ) ) ) ,-5) +transpose(((arpeggio((arpeggio(shuffle(((X+X) |X) ) ) +transpose(shuffle((X+X) ) ,12) ) ) |(((echo(X,4,6) +echo(X,4,6) ) |((transpose(X,4) +transpose(X,4) ) +transpose(X,7) ) ) +transpose((echo(X,4,6) +transpose(shuffle(X) ,7) ) ,12) ) ) +transpose((shuffle(((transpose(X,4) |((X+X) +transpose(X,12) ) ) +transpose(transpose(arpeggio(echo(X,4,6) ) ,-7) ,7) ) ) +(step((arpeggio(transpose(X,-5) ) +transpose(((X|X) +X) ,7) ) ,12) +transpose(transpose((transpose(echo((X+transpose(X,12) ) ,4,6) ,-7) +transpose(transpose((transpose(X,4) +step(X,12) ) ,-7) ,7) ) ,4) ,7) ) ) ,12) ) ,12) ) |transpose(transpose((((transpose(transpose(transpose(echo(transpose(echo(transpose(X,-7) ,4,6) ,4) ,4,6) ,4) ,4) ,-7) +transpose(shuffle(step(step(shuffle(X) ,12) ,12) ) ,4) ) +transpose(transpose(transpose(((transpose(X,-5) |X) |shuffle(echo(X,4,6) ) ) ,-7) ,-5) ,7) ) +step(((((transpose(shuffle((X+X) ) ,-5) +transpose(shuffle(X) ,12) ) |(transpose((X+transpose(X,12) ) ,-5) +transpose((transpose(transpose(X,4) ,-7) +transpose(transpose(X,4) ,-7) ) ,7) ) ) +transpose(((shuffle((X|X) ) +transpose(((X|X) +transpose((X|X) ,7) ) ,12) ) +transpose((echo(X,4,6) +X) ,4) ) ,7) ) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) |X) +transpose(X,7) ) +transpose(transpose(transpose(X,-7) ,4) ,7) ) ,4) ) ,12) ) ,4) ,-7) ) +transpose((((transpose(shuffle(((transpose(((X+transpose(((transpose(X,-7) +transpose(X,4) ) +transpose(step(X,12) ,7) ) ,12) ) |transpose((X+X) ,4) ) ,-7) +transpose((transpose(((arpeggio(X) +transpose(transpose(X,-7) ,4) ) +transpose(transpose(X,-7) ,7) ) ,-7) +echo(transpose(X,4) ,4,6) ) ,7) ) +transpose(transpose(transpose((shuffle(X) +transpose(X,12) ) ,-7) ,-5) ,12) ) ) ,4) +echo(step(((transpose(transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,12) ) +transpose(shuffle(X) ,4) ) +transpose((X+X) ,7) ) ,4) ,-7) +transpose((shuffle((X+transpose(X,7) ) ) +transpose(((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) ,4) ) +transpose(((arpeggio((transpose(X,4) +transpose((X+transpose(X,7) ) ,12) ) ) +transpose(transpose(X,-7) ,4) ) +transpose((X+transpose((arpeggio(X) |(X+transpose(step(X,12) ,7) ) ) ,12) ) ,7) ) ,7) ) ,12) ,4,6) ) +((step((arpeggio((transpose(arpeggio(X) ,-7) +transpose((transpose(X,-5) |echo(transpose(X,4) ,4,6) ) ,7) ) ) |transpose(shuffle(echo(X,4,6) ) ,-7) ) ,12) +transpose(echo(transpose(transpose(echo((X+transpose(step(X,12) ,12) ) ,4,6) ,-5) ,4) ,4,6) ,4) ) +transpose(echo(shuffle((((echo((X+transpose(X,7) ) ,4,6) +transpose(transpose(transpose(X,-7) ,4) ,12) ) +transpose(transpose(transpose(X,-7) ,4) ,7) ) +transpose(((step(X,12) |(X|X) ) +transpose(transpose(X,-7) ,7) ) ,12) ) ) ,4,6) ,7) ) ) +transpose(transpose((((transpose(transpose(transpose((X|X) ,-7) ,-5) ,-5) +(arpeggio(((X+transpose(X,12) ) +transpose(X,7) ) ) |(step(transpose(X,-5) ,12) |(transpose(X,-7) +transpose((X|X) ,12) ) ) ) ) +step((X+transpose(shuffle(X) ,12) ) ,12) ) +((((((X+transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,7) ) ,4) ) +transpose(step(transpose(X,4) ,12) ,7) ) |transpose(echo((X+transpose(X,7) ) ,4,6) ,-5) ) +transpose((arpeggio(step(X,12) ) |(transpose(X,4) +transpose((X+transpose(X,7) ) ,7) ) ) ,7) ) ) ,-7) ,4) ) ,7) ) |((((transpose(transpose(X,-5) ,-7) +transpose((transpose(transpose(((arpeggio((((echo(X,4,6) +transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) +transpose(transpose(transpose(X,4) ,-5) ,7) ) ) +echo(arpeggio(X) ,4,6) ) +(transpose(shuffle((X|(X+transpose(X,12) ) ) ) ,4) |(X|transpose(transpose(X,-7) ,4) ) ) ) ,4) ,-7) +transpose((((shuffle(echo(X,4,6) ) |transpose(X,-7) ) +transpose(step(transpose(arpeggio(transpose(X,4) ) ,-7) ,12) ,12) ) +arpeggio((transpose(X,-7) +transpose(X,-5) ) ) ) ,4) ) ,12) ) +echo((arpeggio(step(arpeggio(X) ,12) ) +transpose(transpose(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) |X) |transpose(arpeggio(transpose(X,-5) ) ,4) ) ,-5) ,12) ) ,4,6) ) +transpose(echo(transpose((((((shuffle((shuffle(((X+X) +X) ) +transpose(transpose(X,-7) ,4) ) ) +(shuffle(transpose(X,-5) ) +transpose(step((X+transpose(X,7) ) ,12) ,7) ) ) +transpose(((((((transpose(X,-7) +(X|X) ) |echo(X,4,6) ) +transpose(((transpose(X,4) +transpose(X,7) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(transpose(X,4) ,7) ) |transpose(step(X,12) ,-5) ) +(transpose(transpose(X,-7) ,4) +transpose(transpose(transpose(X,-5) ,-7) ,7) ) ) ,4) ) +transpose(shuffle((((transpose(X,-5) +transpose((X|X) ,12) ) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) +((X+transpose(X,12) ) +shuffle(X) ) ) ) ,7) ) |((transpose(((X+transpose(X,12) ) +transpose(step(X,12) ,7) ) ,-5) +transpose(arpeggio((X+transpose(X,12) ) ) ,-7) ) +transpose(arpeggio(arpeggio(shuffle((X|transpose(X,-5) ) ) ) ) ,12) ) ) +transpose((echo(step(echo(transpose(echo((echo(X,4,6) +transpose(echo(X,4,6) ,12) ) ,4,6) ,-5) ,4,6) ,12) ,4,6) +transpose((((X+transpose(shuffle(X) ,7) ) +transpose(X,4) ) +echo(echo(X,4,6) ,4,6) ) ,7) ) ,12) ) ,-5) ,4,6) ,4) ) +transpose(arpeggio((transpose(transpose(transpose(arpeggio(arpeggio(transpose(X,-7) ) ) ,4) ,-5) ,-5) |step(transpose(shuffle(transpose(((transpose((X|X) ,4) +transpose(echo(transpose((X|X) ,-7) ,4,6) ,4) ) +transpose(X,7) ) ,4) ) ,-7) ,12) ) ) ,7) ) ) ,4) ) +transpose((((((((echo(transpose((X+transpose(X,12) ) ,4) ,4,6) +transpose(transpose(step(transpose(transpose(X,4) ,-7) ,12) ,4) ,12) ) +(echo(((transpose((X|X) ,4) |shuffle(transpose(X,-7) ) ) +transpose(echo((X|X) ,4,6) ,7) ) ,4,6) |arpeggio(((transpose((transpose((step(X,12) +transpose(arpeggio(X) ,7) ) ,-7) +transpose((shuffle(X) +transpose(shuffle(X) ,7) ) ,7) ) ,-5) +(transpose(transpose(X,-7) ,4) +transpose(transpose((X+transpose(X,-5) ) ,-5) ,7) ) ) +transpose(step((shuffle(X) |shuffle(X) ) ,12) ,7) ) ) ) ) |((echo(transpose((X+transpose(X,7) ) ,-7) ,4,6) |transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose((X|X) ,-7) ,7) ) ,4) ) +step(transpose(X,4) ,12) ) ) +transpose((((transpose(step(((transpose(X,4) +transpose((((X+transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) ,4) ) +transpose((X|X) ,7) ) ,12) ,4) +arpeggio(transpose(echo(((X+transpose(X,4) ) +transpose(step(X,12) ,7) ) ,4,6) ,-5) ) ) |shuffle(transpose((((X+transpose(transpose(X,-7) ,12) ) +transpose(transpose(X,-7) ,4) ) +transpose((arpeggio(X) +transpose(transpose(X,4) ,12) ) ,7) ) ,-5) ) ) +echo(transpose(transpose(arpeggio(transpose(transpose(echo(X,4,6) ,-5) ,4) ) ,-7) ,-5) ,4,6) ) ,4) ) +transpose((((((transpose((transpose(X,-7) +transpose(X,7) ) ,-7) +transpose(transpose(echo(shuffle((X|arpeggio(X) ) ) ,4,6) ,-5) ,4) ) +transpose(((shuffle(transpose((arpeggio(step(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ) +transpose(transpose((X+transpose(X,4) ) ,4) ,12) ) ,-7) ) +transpose(((X+transpose(((X+transpose(arpeggio(X) ,7) ) +transpose(((X+transpose(step(X,12) ,4) ) +transpose((X+X) ,7) ) ,7) ) ,7) ) |step((arpeggio((X|X) ) +transpose((X|X) ,12) ) ,12) ) ,4) ) +transpose(((echo(((transpose(transpose(X,-5) ,4) |transpose(transpose(X,-7) ,-7) ) |(X+(X+transpose(X,12) ) ) ) ,4,6) +transpose(((((transpose(step(X,12) ,-7) +transpose(transpose((X+transpose(X,12) ) ,4) ,12) ) +transpose(transpose(arpeggio(X) ,-7) ,4) ) +transpose((transpose(X,-7) +shuffle(X) ) ,7) ) |transpose(shuffle((X+transpose(transpose(X,4) ,7) ) ) ,4) ) ,4) ) +transpose(step(transpose(transpose((arpeggio(X) |transpose(X,4) ) ,-7) ,4) ,12) ,7) ) ,7) ) ,7) ) +transpose((((transpose(X,-7) +X) +transpose(transpose((X|X) ,4) ,7) ) +step(((X+transpose((X+X) ,7) ) +arpeggio(X) ) ,12) ) ,4) ) +transpose(transpose((transpose(transpose(transpose(X,-7) ,-7) ,-7) |transpose(echo(step(transpose(echo(X,4,6) ,-7) ,12) ,4,6) ,4) ) ,-5) ,7) ) +((transpose(transpose(transpose((X|(transpose(transpose(shuffle(X) ,-5) ,4) +step((X+X) ,12) ) ) ,4) ,-7) ,-7) +transpose((((step(transpose((transpose(X,4) |arpeggio(shuffle(X) ) ) ,-7) ,12) |shuffle((((X+transpose((X+X) ,-5) ) +transpose(transpose(((X|X) +(X+transpose(X,12) ) ) ,-5) ,4) ) +transpose((transpose(transpose(transpose(X,4) ,4) ,-5) +transpose((X+transpose(X,7) ) ,7) ) ,7) ) ) ) +transpose(((X+transpose(transpose(X,-5) ,12) ) +(step(X,12) |transpose((X|X) ,-5) ) ) ,4) ) +transpose(transpose((arpeggio(transpose(transpose(transpose(((X+transpose((X+X) ,4) ) +transpose(X,7) ) ,4) ,4) ,4) ) +transpose((arpeggio(transpose(X,-7) ) +transpose(((X+transpose((transpose(X,4) +(X+transpose(X,7) ) ) ,4) ) +transpose(arpeggio((X+transpose(X,12) ) ) ,7) ) ,-7) ) ,7) ) ,4) ,7) ) ,4) ) +transpose(step(((((((transpose(shuffle(echo(X,4,6) ) ,-5) +(X|transpose(X,-7) ) ) |echo((((X+transpose(X,4) ) +transpose(X,12) ) +transpose((transpose(X,4) |X) ,7) ) ,4,6) ) +transpose(shuffle((transpose((X+transpose(X,7) ) ,-7) |transpose(transpose(arpeggio(X) ,4) ,4) ) ) ,4) ) +transpose(step((shuffle((X+X) ) +transpose(X,-5) ) ,12) ,7) ) +transpose((transpose((transpose(X,-5) +X) ,4) +transpose(shuffle(shuffle(echo(((((X+X) +transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) +transpose(transpose((X|X) ,-7) ,7) ) ,4,6) ) ) ,12) ) ,4) ) +transpose(transpose(shuffle(transpose(arpeggio(X) ,4) ) ,-7) ,7) ) ,12) ,7) ) ) ,7) ) +transpose(echo((((transpose(transpose(transpose((X|(X|X) ) ,-5) ,4) ,4) +echo((transpose(X,-5) |(step(transpose(echo((X|X) ,4,6) ,4) ,12) |(arpeggio(transpose(X,4) ) +transpose(transpose(X,-7) ,12) ) ) ) ,4,6) ) +step(step(((X+transpose(X,12) ) +arpeggio((step(X,12) |echo(X,4,6) ) ) ) ,12) ,12) ) |shuffle(transpose((((transpose((echo(X,4,6) +transpose(transpose(transpose(shuffle((X|X) ) ,-5) ,-5) ,12) ) ,-7) +transpose(((transpose(X,4) +transpose(transpose(((X+transpose(X,7) ) +transpose(X,7) ) ,-7) ,4) ) +transpose((((X+transpose(X,7) ) +transpose(X,12) ) +transpose(((X|X) +transpose(transpose(X,-7) ,12) ) ,7) ) ,7) ) ,12) ) +transpose((echo(X,4,6) +transpose((transpose((transpose(X,-7) +transpose(X,12) ) ,-7) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ) ,12) ) ,4) ) +transpose(shuffle((echo(transpose((X+transpose(transpose(X,-7) ,7) ) ,4) ,4,6) +transpose(transpose((transpose(X,-5) +transpose(((X|X) +transpose(X,12) ) ,12) ) ,-7) ,12) ) ) ,7) ) ,-5) ) ) ,4,6) ,7) ) |(((((transpose(transpose((((step(shuffle(X) ,12) +transpose((arpeggio(X) +transpose(X,12) ) ,12) ) |transpose((X+transpose(X,12) ) ,4) ) +((((transpose(shuffle((X|X) ) ,-5) +transpose(transpose(X,-5) ,4) ) +transpose(shuffle((X|X) ) ,7) ) +echo(transpose(transpose(step(X,12) ,4) ,4) ,4,6) ) |(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) +step((step(X,12) |(X+transpose(X,7) ) ) ,12) ) ) ) ,4) ,-7) +transpose(transpose((transpose((((((X+transpose(X,7) ) |transpose(X,4) ) +transpose((X+step(X,12) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +X) ,4) +transpose(transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(X,7) ) ,-5) ,-5) ) ,-7) ,12) ) +transpose(transpose((((echo(((((transpose(X,-7) |X) +(X|(X+transpose(X,7) ) ) ) +arpeggio(transpose(X,-5) ) ) +transpose((((X|X) |arpeggio(X) ) +transpose((transpose(((X|X) +transpose(X,7) ) ,4) |((transpose((X+X) ,4) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,4) ,7) ) ) ,12) ) ,12) ) ,4,6) |arpeggio(((arpeggio(echo(X,4,6) ) |transpose(transpose(X,-5) ,-5) ) +(step(echo((X+X) ,4,6) ,12) +shuffle((transpose(X,4) +transpose((shuffle(X) +transpose(transpose(X,-7) ,12) ) ,12) ) ) ) ) ) ) +echo((((X+transpose((transpose(X,-5) +transpose(transpose(X,-7) ,12) ) ,12) ) +transpose(transpose(transpose(X,4) ,-5) ,4) ) +transpose((transpose(shuffle(X) ,-5) +transpose((((X+transpose(X,7) ) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ,12) ) ,7) ) ,4,6) ) +((arpeggio(transpose(transpose(X,-5) ,-5) ) +transpose((echo((((transpose(X,-7) +transpose(X,-5) ) |transpose((X|X) ,-5) ) +((arpeggio(X) +transpose(X,12) ) +transpose(arpeggio(X) ,7) ) ) ,4,6) +shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,12) ) +transpose(((transpose((((X+transpose(echo(X,4,6) ,12) ) +transpose(X,12) ) +arpeggio(transpose(X,-5) ) ) ,-5) |(step(step(X,12) ,12) +transpose(transpose(((((X+transpose(X,12) ) +arpeggio(X) ) +transpose((X|X) ,4) ) +transpose(shuffle(X) ,7) ) ,4) ,7) ) ) |transpose(shuffle(X) ,4) ) ,12) ) ) ,4) ,4) ) +transpose(transpose((arpeggio((((transpose((transpose(transpose(X,4) ,-5) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose((X|X) ,7) ) ,-7) ) ,4) |((X+(X|X) ) +transpose(transpose(X,4) ,7) ) ) +transpose(((transpose(transpose(X,-7) ,4) |((transpose(X,4) +transpose(X,12) ) +transpose(transpose(echo((X+X) ,4,6) ,-5) ,12) ) ) +((shuffle(X) +transpose(X,12) ) +transpose(arpeggio(((X+transpose(transpose(X,-5) ,4) ) +transpose((X+X) ,7) ) ) ,7) ) ) ,4) ) +transpose((((X+(X+transpose(X,7) ) ) +transpose(transpose(transpose((X+transpose(X,12) ) ,-7) ,-7) ,12) ) +transpose(transpose(transpose(X,-5) ,4) ,-5) ) ,7) ) ) +((((arpeggio(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(arpeggio(transpose((X+X) ,-5) ) ,12) ) +transpose(step(step(X,12) ,12) ,7) ) +transpose(shuffle(transpose(X,-7) ) ,12) ) +transpose(arpeggio(transpose(transpose(X,-5) ,4) ) ,12) ) ) ,4) ,7) ) +transpose((transpose(((transpose(transpose(arpeggio((X|X) ) ,-5) ,-5) +((transpose(((X+transpose(X,7) ) |X) ,-5) +transpose(transpose((echo(X,4,6) |X) ,4) ,4) ) +transpose((X+(X+transpose(X,7) ) ) ,7) ) ) +transpose(transpose((transpose(echo(X,4,6) ,4) +transpose(((X+transpose(X,12) ) +(transpose(X,-5) +transpose(X,12) ) ) ,7) ) ,-5) ,12) ) ,4) |step(transpose(arpeggio((transpose((((X+transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,-5) +arpeggio(arpeggio(X) ) ) ) ,-5) ,12) ) ,4) ) +transpose(step((transpose(transpose(transpose(X,-5) ,-5) ,4) +transpose(step(transpose((transpose(X,4) +transpose((X|X) ,12) ) ,-5) ,12) ,7) ) ,12) ,7) ) ) ,7) ) ) )
random seed used was 147064887

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