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:
(((((transpose((shuffle(transpose((transpose(echo(X,4,6) ,-5) +transpose((((X+X) +step(X,12) ) |shuffle((((transpose(X,-7) +transpose(X,7) ) +transpose(transpose(X,-7) ,7) ) +step(transpose(transpose(X,-7) ,-7) ,12) ) ) ) ,7) ) ,4) ) +(arpeggio(transpose(X,-5) ) +(transpose((step(transpose(X,4) ,12) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(X,-7) ,7) ) +transpose(X,12) ) ,7) ) ,-7) +transpose(((((transpose(X,-5) +(step(X,12) +transpose(X,4) ) ) +(transpose(X,4) +(X+transpose(X,7) ) ) ) +transpose(transpose(transpose(shuffle((X+X) ) ,4) ,-7) ,4) ) +transpose((((X+step(X,12) ) |arpeggio(X) ) +transpose(transpose(X,-5) ,12) ) ,7) ) ,7) ) ) ) ,4) +transpose((transpose(transpose(((((arpeggio((transpose((X+X) ,4) +transpose((X+transpose(X,12) ) ,4) ) ) +transpose((transpose((X+transpose(echo(X,4,6) ,12) ) ,-5) +transpose(transpose(X,4) ,-7) ) ,4) ) +transpose(((X+transpose((X+transpose(X,7) ) ,7) ) +transpose((transpose(step(X,12) ,4) +transpose(step(X,12) ,7) ) ,7) ) ,7) ) +transpose(transpose(step(shuffle(((X+transpose(X,7) ) +transpose((X+X) ,12) ) ) ,12) ,-7) ,4) ) +transpose(((echo((transpose((transpose(X,4) +transpose(X,12) ) ,-7) +transpose(transpose(X,4) ,12) ) ,4,6) +transpose(((X+transpose((transpose(X,4) +transpose((((X+transpose(X,12) ) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ,7) ) ,7) ) +transpose((transpose(((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,7) ) ,4) |((((X+X) +X) +transpose(step(X,12) ,4) ) +transpose(X,7) ) ) ,7) ) ,4) ) +transpose(((transpose(transpose(X,-7) ,-7) +transpose(X,-7) ) +((X+transpose((((X+transpose(X,4) ) +transpose(X,7) ) +(X|X) ) ,7) ) |echo(transpose(X,-7) ,4,6) ) ) ,7) ) ,7) ) ,-7) ,-7) +(transpose(step(transpose((X|transpose(X,4) ) ,4) ,12) ,-7) |echo((((transpose((step(X,12) |X) ,4) +transpose(((X|X) +transpose((X+X) ,12) ) ,-5) ) +transpose((echo(((transpose(transpose(X,-5) ,-5) +transpose(shuffle((transpose(X,4) +X) ) ,4) ) +transpose((X|X) ,7) ) ,4,6) |(transpose((transpose(X,4) +transpose(X,12) ) ,4) |arpeggio(step((X|transpose(X,4) ) ,12) ) ) ) ,7) ) +transpose((transpose(((step((X+transpose(X,7) ) ,12) |transpose(X,-5) ) |((arpeggio(shuffle(X) ) +transpose((X|X) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ,-7) +((transpose(transpose(arpeggio((X+X) ) ,4) ,-7) +transpose((X+transpose((transpose(shuffle(X) ,-5) |shuffle(shuffle(X) ) ) ,7) ) ,7) ) |transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +(X+X) ) |transpose(X,-7) ) ,4) ) ) ,7) ) ,4,6) ) ) ,4) ) +transpose(echo(step((((transpose(echo((X+step(X,12) ) ,4,6) ,-5) +transpose((transpose(((X+X) +transpose(X,-7) ) ,-7) +((((X+transpose(X,7) ) +transpose((transpose(X,4) |(transpose((X|X) ,4) |echo((X+transpose(X,12) ) ,4,6) ) ) ,4) ) +transpose(echo(transpose((transpose(X,-5) +(X+X) ) ,-7) ,4,6) ,7) ) |(((((echo(X,4,6) |step(X,12) ) |((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ) +transpose(X,-5) ) +transpose((((X+transpose((X+X) ,4) ) +transpose(shuffle(X) ,7) ) |shuffle((X+transpose(X,7) ) ) ) ,4) ) +transpose(transpose(shuffle(transpose(echo(X,4,6) ,-7) ) ,-7) ,7) ) ) ) ,4) ) +transpose(step(transpose(step(X,12) ,-7) ,12) ,7) ) +echo(((transpose(echo(X,4,6) ,-7) +transpose(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,12) ) ,-5) ,7) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,4) ,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ) ,4,6) ) ,12) ,4,6) ,7) ) |(transpose(transpose(transpose(transpose(arpeggio(((transpose(X,-5) +transpose(shuffle(transpose(X,4) ) ,12) ) |transpose(transpose(((transpose(X,-7) +transpose(X,12) ) |(transpose(X,-5) +(X+transpose(X,7) ) ) ) ,-7) ,4) ) ) ,4) ,-5) ,-7) ,-5) |transpose((echo(transpose((transpose((X+transpose(transpose((arpeggio(X) +transpose(X,7) ) ,4) ,12) ) ,4) +transpose(echo(shuffle(((transpose(transpose(X,-5) ,-7) +transpose(X,-7) ) |(((((((X|X) +transpose((X|X) ,4) ) +transpose(transpose(X,-7) ,7) ) +((X+transpose(X,7) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ) +transpose(transpose((X+X) ,4) ,4) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) +transpose(((X|(X+X) ) +transpose((X|X) ,7) ) ,12) ) ) ) ,4,6) ,12) ) ,-7) ,4,6) +transpose(transpose(transpose(((transpose((transpose(X,-5) +transpose(transpose(X,4) ,12) ) ,-5) +transpose(((((transpose(((X|X) +step(transpose(X,4) ,12) ) ,-5) |echo(arpeggio(((X+transpose(transpose(X,4) ,4) ) +transpose(arpeggio(X) ,7) ) ) ,4,6) ) |(step(arpeggio((X|X) ) ,12) +transpose((transpose(X,4) |transpose(X,-5) ) ,-5) ) ) +transpose(arpeggio((((X+transpose(X,7) ) +transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ) ,4) ) +transpose((((shuffle(((X|X) +X) ) |transpose(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) ,-5) ) +transpose((shuffle(X) +arpeggio(X) ) ,4) ) +transpose((shuffle((X+X) ) +transpose((X+transpose(transpose(X,-5) ,12) ) ,7) ) ,7) ) ,7) ) ,4) ) +transpose(transpose((((((transpose(X,-5) +transpose(X,7) ) +transpose(transpose(((X|X) +transpose((X+transpose(X,7) ) ,7) ) ,-5) ,4) ) +transpose((X+(X+transpose(X,7) ) ) ,7) ) |echo((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,12) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X|X) ,7) ) ,4,6) ) +arpeggio(echo(arpeggio(X) ,4,6) ) ) ,-7) ,7) ) ,-7) ,-5) ,12) ) ,-7) ) ) +transpose(arpeggio(((((((((((((transpose(X,-7) +transpose(step(step(X,12) ,12) ,12) ) +transpose(transpose(X,-5) ,4) ) +transpose(arpeggio(step(arpeggio(X) ,12) ) ,7) ) +transpose((echo(shuffle((X+X) ) ,4,6) +transpose(transpose(X,-7) ,12) ) ,-7) ) |shuffle(transpose(transpose((((X+X) |X) |X) ,4) ,-5) ) ) +transpose((echo((step(X,12) +transpose(transpose(arpeggio(X) ,-7) ,7) ) ,4,6) +transpose(shuffle((transpose((transpose(X,-5) +transpose(shuffle(X) ,12) ) ,-7) +transpose(transpose((X+transpose((X+X) ,-5) ) ,-5) ,12) ) ) ,7) ) ,12) ) +transpose((echo(transpose(X,-5) ,4,6) +transpose(transpose(transpose((((((transpose(X,-5) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose((transpose(X,4) +transpose(X,7) ) ,7) ) +transpose(arpeggio(X) ,-5) ) ,-7) ,-7) ,12) ) ,7) ) +transpose(((((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +transpose(X,4) ) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) |transpose(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) ,12) ) +transpose((echo((transpose((arpeggio(((X+transpose(X,7) ) |transpose(X,4) ) ) |transpose(transpose(echo(X,4,6) ,4) ,4) ) ,-5) |transpose(((step(transpose(transpose(X,4) ,4) ,12) +transpose((transpose(transpose(transpose(X,-5) ,4) ,4) +transpose((shuffle(step(X,12) ) +transpose((transpose(X,4) |X) ,7) ) ,12) ) ,4) ) +transpose((echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) +transpose(transpose(X,-5) ,12) ) ,7) ) ,4) ) ,4,6) +transpose(((transpose(step(step(((X+transpose(((X+transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(X,7) ) ,12) ,12) ,-5) |echo(transpose((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) +transpose(shuffle(shuffle(X) ) ,12) ) ,4) ,4,6) ) |transpose((transpose(((((transpose(X,4) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) |step(step(X,12) ,12) ) +transpose(echo(((X|X) +transpose(X,12) ) ,4,6) ,12) ) ,4) +((transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-7) +shuffle(transpose(transpose(X,-5) ,4) ) ) +((arpeggio(X) +transpose(transpose(transpose(X,-7) ,4) ,-7) ) |transpose(((X+transpose(X,7) ) +(X|X) ) ,4) ) ) ) ,-7) ) ,12) ) ,7) ) +transpose(shuffle((transpose(((((transpose((transpose((X+transpose(X,12) ) ,4) +transpose(X,12) ) ,4) +transpose(transpose((((((X+transpose(X,12) ) +shuffle(X) ) +transpose((X|transpose(X,-5) ) ,12) ) +transpose(echo(X,4,6) ,4) ) +transpose((transpose(X,4) +transpose(step((X+X) ,12) ,12) ) ,7) ) ,4) ,4) ) +transpose((transpose(arpeggio(X) ,-7) |(((X+transpose(X,7) ) |transpose(X,-7) ) |(X+transpose(X,7) ) ) ) ,7) ) +transpose(arpeggio(transpose(step(X,12) ,-7) ) ,4) ) +transpose(((transpose(transpose(X,-7) ,4) +transpose(transpose(transpose(echo((X|X) ,4,6) ,-7) ,4) ,12) ) +transpose(transpose(echo((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,4,6) ,-7) ,12) ) ,7) ) ,4) |transpose((shuffle((((step(X,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(transpose(((X+(X|X) ) +((X+X) |transpose(X,-7) ) ) ,-5) ,12) ) +shuffle(step(transpose(X,4) ,12) ) ) ) +transpose((transpose(step(transpose(arpeggio(X) ,4) ,12) ,-7) |echo(((X|transpose(X,-7) ) +(((X|X) |X) +transpose((X+X) ,7) ) ) ,4,6) ) ,12) ) ,-7) ) ) ,7) ) +transpose(((transpose(transpose((transpose(((((transpose(X,-5) +transpose(X,4) ) +transpose(X,7) ) |step(X,12) ) +(X|shuffle(X) ) ) ,-7) +(transpose(arpeggio(transpose(X,-7) ) ,-7) +transpose(transpose((X|X) ,-7) ,12) ) ) ,-5) ,-5) |(transpose(transpose((transpose(X,-7) +X) ,-7) ,-7) +transpose(transpose(transpose((echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) +arpeggio(X) ) ,-7) ,4) ,-5) ) ) |((transpose(transpose((shuffle(transpose(transpose(X,4) ,4) ) +transpose((((X+X) +transpose(transpose(((X+X) |step(X,12) ) ,-7) ,4) ) +transpose(((arpeggio(X) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,7) ) ,-7) ) ,4) ,4) +transpose(transpose((transpose(((transpose(transpose(X,4) ,4) +transpose(((transpose(X,4) +transpose((transpose(X,4) +(X+X) ) ,7) ) +transpose((((shuffle(X) |(X|X) ) +((X+X) |X) ) |((X+transpose(X,12) ) +((X+transpose(X,12) ) +transpose((X+transpose(X,12) ) ,7) ) ) ) ,12) ) ,4) ) +transpose(((transpose(transpose(step(echo(X,4,6) ,12) ,-7) ,-7) +transpose(transpose((((X+transpose(arpeggio(X) ,4) ) +transpose(X,7) ) |((X+transpose(X,7) ) +transpose((X|X) ,12) ) ) ,-5) ,4) ) +transpose(transpose(((X+transpose(X,7) ) +transpose(X,4) ) ,-5) ,7) ) ,7) ) ,-5) +transpose((transpose(transpose(shuffle(X) ,-5) ,-5) +transpose(transpose(step((X+X) ,12) ,-7) ,12) ) ,7) ) ,-5) ,12) ) +transpose((echo((transpose(echo((X+X) ,4,6) ,-5) |transpose((X+transpose(X,7) ) ,4) ) ,4,6) +transpose(((transpose((step(transpose(transpose(X,-5) ,-5) ,12) +transpose((echo((X|X) ,4,6) +transpose((((step(X,12) +transpose(transpose(X,4) ,4) ) +transpose(transpose(X,4) ,7) ) |transpose(X,-7) ) ,12) ) ,7) ) ,-7) +(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio(X) ,7) ) +transpose(X,12) ) |(step(X,12) +transpose(X,-7) ) ) |transpose(transpose(X,4) ,-7) ) |transpose(transpose((echo(X,4,6) |shuffle(X) ) ,-7) ,4) ) ) |(shuffle((transpose((transpose(X,-5) |(X+X) ) ,4) |((echo(((X+X) +transpose(transpose(X,4) ,7) ) ,4,6) +transpose((arpeggio((X|X) ) +transpose(transpose((X|X) ,-7) ,7) ) ,4) ) +transpose((transpose(step(X,12) ,-7) +X) ,7) ) ) ) +transpose(transpose(echo((transpose(echo((X|X) ,4,6) ,4) +transpose(transpose(X,-5) ,7) ) ,4,6) ,-7) ,7) ) ) ,12) ) ,12) ) ) ,4) ) +transpose(step(transpose(shuffle((((shuffle(transpose(X,-7) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(((shuffle(X) |transpose((X|X) ,-5) ) +transpose((transpose(X,-5) |(X+transpose(X,12) ) ) ,4) ) ,4) ) +transpose(step(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,12) ,7) ) ) ,-7) ,12) ,7) ) ) ,4) ) +transpose(transpose(step(transpose((transpose((((step(transpose(step(((X|step(X,12) ) |(X|X) ) ,12) ,-7) ,12) |step((((transpose(transpose(X,4) ,-7) +transpose(transpose(transpose(X,4) ,-5) ,12) ) +transpose(((transpose(X,4) |(X+transpose(transpose(X,4) ,7) ) ) +transpose(X,4) ) ,4) ) +transpose(transpose((transpose(X,4) +transpose(X,-7) ) ,-7) ,7) ) ,12) ) +transpose(shuffle(transpose(transpose((transpose(((transpose(shuffle(X) ,-7) |arpeggio(arpeggio(X) ) ) |(arpeggio(X) |X) ) ,-7) +transpose(transpose((((X+transpose(X,4) ) +transpose(X,7) ) +(X+transpose((X+transpose(X,7) ) ,7) ) ) ,-5) ,12) ) ,4) ,4) ) ,4) ) +transpose((transpose(step((echo((transpose(X,4) +transpose(((X+X) +(X+transpose(X,7) ) ) ,12) ) ,4,6) +(transpose(transpose(transpose(X,-5) ,-5) ,4) +step(X,12) ) ) ,12) ,4) +(echo(transpose(transpose(transpose(((((X+transpose(shuffle(X) ,4) ) +transpose(X,7) ) +transpose(((X+X) +transpose(echo(X,4,6) ,12) ) ,4) ) +transpose(step((X+transpose(X,7) ) ,12) ,7) ) ,-7) ,4) ,-7) ,4,6) +transpose(((X+transpose(X,7) ) +((X+transpose(X,12) ) +transpose(X,7) ) ) ,7) ) ) ,7) ) ,-7) +transpose(transpose(shuffle(transpose(((((echo(transpose(X,4) ,4,6) +transpose(shuffle((X+transpose(X,7) ) ) ,4) ) +transpose(((X+transpose(X,12) ) +transpose((X|X) ,7) ) ,7) ) +transpose(transpose((transpose(transpose((X+X) ,4) ,4) |shuffle(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) ,-7) ,7) ) +arpeggio((X+(transpose(transpose(X,4) ,-5) +transpose(echo(X,4,6) ,4) ) ) ) ) ,4) ) ,4) ,12) ) ,-7) ,12) ,4) ,7) )
random seed used was 209388457 EXPR = (transpose((transpose((((shuffle((X+X) ) |transpose(((X|(X+transpose(X,7) ) ) +transpose(shuffle(X) ,7) ) ,-7) ) +transpose(transpose(transpose(transpose((X+transpose(X,12) ) ,-7) ,-5) ,-7) ,7) ) |transpose(shuffle(transpose(transpose(echo(X,4,6) ,-5) ,-5) ) ,-5) ) ,4) +transpose(((transpose((transpose(((((transpose(X,4) +transpose(X,7) ) +transpose(X,4) ) +transpose((shuffle(X) |arpeggio(X) ) ,7) ) +((X+X) +transpose(echo(X,4,6) ,12) ) ) ,-5) |arpeggio(step((transpose(X,4) +X) ,12) ) ) ,4) |shuffle(transpose(transpose(((step((transpose(X,-7) +transpose(X,-5) ) ,12) +transpose(((X|X) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ,-7) ) ) +transpose(transpose(((((step(X,12) +transpose(X,7) ) +transpose((((X+transpose(X,12) ) +transpose((X|X) ,12) ) |step(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,12) ) ,4) ) +transpose(transpose(transpose((transpose(X,4) +transpose(X,12) ) ,4) ,-7) ,7) ) |transpose(((transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-5) |transpose(X,-7) ) +transpose(((((X|X) +transpose((X|X) ,4) ) +transpose(X,7) ) |echo((X+X) ,4,6) ) ,12) ) ,-7) ) ,-5) ,7) ) ,4) ) ,-7) +shuffle(arpeggio(step(transpose((transpose((transpose(((step(X,12) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,-7) |transpose(X,-7) ) ,4) +transpose(transpose((transpose(X,-5) +shuffle(X) ) ,4) ,12) ) ,-7) ,12) ) ) )
random seed used was 0 EXPR = (echo((((((((step((arpeggio(X) +(((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,7) ) ) ,12) +(step(shuffle(X) ,12) +transpose(transpose((X+transpose(X,12) ) ,-5) ,12) ) ) +transpose(((transpose((X+transpose(X,12) ) ,-7) +transpose(((X|X) +transpose(X,12) ) ,4) ) +transpose(((X|X) +X) ,7) ) ,4) ) +transpose(((X+transpose((X+X) ,12) ) +((X+(X+transpose((X+X) ,12) ) ) +transpose(((X+transpose(X,12) ) +transpose(X,-5) ) ,12) ) ) ,7) ) |(transpose(echo((X+transpose(X,7) ) ,4,6) ,-7) +(echo(arpeggio(X) ,4,6) +transpose(transpose(X,-7) ,7) ) ) ) +((transpose(echo(transpose(X,-7) ,4,6) ,4) +transpose((shuffle(((X+transpose((X|X) ,4) ) +transpose(transpose((X+X) ,-5) ,7) ) ) +(transpose(transpose(X,4) ,-5) +transpose((transpose(X,-7) |step(X,12) ) ,12) ) ) ,12) ) +transpose(transpose(step((X|X) ,12) ,-7) ,-7) ) ) +transpose(step(arpeggio(transpose((arpeggio(transpose(X,-5) ) +(shuffle(X) +transpose(X,-5) ) ) ,-7) ) ,12) ,12) ) +transpose((transpose(transpose(transpose((((transpose(step((((X+transpose(X,4) ) +transpose(arpeggio(X) ,7) ) +transpose(X,12) ) ,12) ,4) +transpose(shuffle(transpose(X,4) ) ,4) ) +transpose(transpose((((transpose(X,4) +transpose((X+X) ,7) ) +transpose(step(shuffle(X) ,12) ,4) ) +transpose((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) |transpose((X+X) ,-7) ) ,7) ) ,-7) ,4) ) +transpose(transpose(((transpose(shuffle(X) ,-5) +transpose(transpose(X,-7) ,7) ) |transpose(transpose((X+transpose(X,12) ) ,4) ,-7) ) ,4) ,7) ) ,-5) ,-7) ,-7) |echo((step((((transpose(transpose(X,4) ,4) +transpose((((transpose(X,-5) +X) +((transpose(step(X,12) ,-5) +transpose(transpose(X,4) ,4) ) +transpose((X|X) ,7) ) ) +(transpose(X,4) |(((X+X) +echo(X,4,6) ) +transpose(step(arpeggio(X) ,12) ,7) ) ) ) ,12) ) +transpose(((((X+X) +transpose((X|X) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) |arpeggio(X) ) ,4) ) +transpose(shuffle(transpose(transpose(X,-5) ,4) ) ,7) ) ,12) +transpose(((((((transpose((((X+X) +transpose(X,4) ) +transpose((X|X) ,7) ) ,-7) +transpose(transpose((X+X) ,4) ,4) ) +transpose(transpose(transpose(transpose(X,4) ,-7) ,4) ,7) ) +transpose(echo(transpose(transpose((transpose(X,4) |X) ,-7) ,4) ,4,6) ,4) ) +transpose((arpeggio(((X+transpose(X,7) ) +step(X,12) ) ) +transpose(((X+X) +transpose((X|X) ,7) ) ,7) ) ,7) ) +transpose((transpose(((X+transpose(X,12) ) +X) ,4) +transpose(shuffle(step((X+X) ,12) ) ,12) ) ,-7) ) +(step(transpose(((X+transpose(X,12) ) +transpose(X,-5) ) ,4) ,12) +echo(transpose((((X+transpose(X,12) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(transpose(X,-7) ,-5) ,7) ) ,4) ,4,6) ) ) ,7) ) ,4,6) ) ,12) ) ,4,6) +transpose(transpose(step(transpose(transpose(step(shuffle(transpose((transpose(X,-5) +transpose((X+X) ,7) ) ,4) ) ,12) ,4) ,4) ,12) ,-7) ,12) )
random seed used was 0 EXPR = (((transpose(step(transpose(((((X+transpose(transpose(transpose(X,-5) ,4) ,4) ) +transpose(transpose(step(X,12) ,-5) ,7) ) +shuffle((X+X) ) ) +transpose((X+transpose(X,12) ) ,-7) ) ,-5) ,12) ,4) +transpose((((transpose(transpose(transpose(step(transpose(X,4) ,12) ,-7) ,-7) ,4) +transpose(transpose((arpeggio(shuffle((X+X) ) ) +echo(echo(transpose(X,-7) ,4,6) ,4,6) ) ,-5) ,7) ) +transpose(((echo(transpose((echo((transpose((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-5) |step(transpose(X,-5) ,12) ) ,4,6) +transpose(((step(((((X+X) +(X|X) ) +transpose(((X+X) +X) ,4) ) +transpose(transpose(X,-5) ,7) ) ,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(arpeggio((X+X) ) ,4) ,7) ) ,12) ) ,-7) ,4,6) +transpose(echo(transpose(transpose((echo(transpose((X|X) ,-7) ,4,6) +transpose(X,7) ) ,-7) ,-5) ,4,6) ,4) ) +transpose(transpose(((transpose(transpose(shuffle((X|X) ) ,-7) ,4) +transpose((transpose(transpose(X,4) ,4) +shuffle((X|X) ) ) ,7) ) |(transpose((transpose(transpose(X,-7) ,4) +((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ,4) |transpose(arpeggio(shuffle(X) ) ,-5) ) ) ,4) ,7) ) ,12) ) +transpose(echo(((shuffle((X+transpose((X+transpose(X,7) ) ,7) ) ) +transpose((shuffle((X+transpose(X,12) ) ) +transpose(X,4) ) ,4) ) +transpose(step(arpeggio(X) ,12) ,7) ) ,4,6) ,12) ) ,-5) ) +transpose(step(arpeggio(transpose(((arpeggio(X) +(((X+transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) +transpose(arpeggio(X) ,7) ) ) |transpose(transpose(X,-5) ,4) ) ,-5) ) ,12) ,12) ) |((transpose(arpeggio(echo((transpose(transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ,4) +transpose(((((transpose(transpose((X|X) ,-5) ,-5) |(X+transpose(transpose(X,-5) ,7) ) ) +transpose((transpose((X+X) ,-7) |arpeggio(step(X,12) ) ) ,7) ) |((transpose(((transpose(X,-7) +transpose(arpeggio(X) ,4) ) +transpose(transpose(arpeggio(X) ,-7) ,7) ) ,4) +transpose(step((step((X|X) ,12) +(shuffle(shuffle(X) ) +transpose((X|X) ,-5) ) ) ,12) ,4) ) +transpose((transpose(transpose(X,4) ,4) |((X+transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ) ,7) ) ) +transpose(transpose(echo(X,4,6) ,-5) ,7) ) ,7) ) ,4,6) ) ,4) |transpose(arpeggio(echo((step(echo(echo(transpose(step(step(X,12) ,12) ,-7) ,4,6) ,4,6) ,12) +transpose(step(transpose(transpose(transpose(shuffle(X) ,-5) ,4) ,4) ,12) ,-5) ) ,4,6) ) ,-5) ) |transpose((transpose(echo(transpose((transpose(((transpose((X+transpose(X,-5) ) ,4) +transpose((transpose(transpose(X,-7) ,-5) |arpeggio(transpose(X,-7) ) ) ,4) ) +transpose(echo((echo(X,4,6) +transpose(transpose(X,4) ,-5) ) ,4,6) ,7) ) ,-5) +transpose((((transpose(transpose(X,4) ,4) +transpose((X+shuffle(X) ) ,12) ) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose((echo(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-7) ,4,6) +transpose(arpeggio((transpose((X+transpose(X,7) ) ,-7) +transpose((shuffle(X) |arpeggio(X) ) ,12) ) ) ,7) ) ,7) ) ,12) ) ,-7) ,4,6) ,-5) |((transpose((arpeggio((((step(X,12) +transpose((X|X) ,12) ) +transpose((transpose(X,-7) +shuffle(X) ) ,4) ) +transpose(arpeggio(X) ,7) ) ) |((((transpose(X,4) +transpose(transpose(X,-7) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) |(X+(X+X) ) ) +transpose(echo(arpeggio((X|X) ) ,4,6) ,12) ) ) ,4) +transpose((echo(shuffle(transpose((X+transpose(X,7) ) ,4) ) ,4,6) +transpose(transpose(echo(transpose(step(transpose(X,4) ,12) ,-5) ,4,6) ,-5) ,12) ) ,12) ) +transpose(echo(echo(transpose(transpose(step((X+transpose(X,7) ) ,12) ,-5) ,4) ,4,6) ,4,6) ,12) ) ) ,4) ) )
random seed used was 0

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