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

NOTE: Generated phrase was too large ( 69060 ) , it has been truncated at 5000 notes. EXPR = (echo((shuffle(shuffle(transpose((transpose(echo(X,4,6) ,-5) |((arpeggio(step(X,12) ) +transpose(transpose(transpose(X,-5) ,4) ,7) ) |((transpose(X,4) +transpose(echo(transpose(X,-5) ,4,6) ,4) ) +transpose(((X+X) +step(echo(X,4,6) ,12) ) ,7) ) ) ) ,-5) ) ) |arpeggio(((transpose((((transpose(((X+transpose(transpose(X,-5) ,7) ) +transpose(transpose(X,4) ,-5) ) ,4) +transpose(X,7) ) |step((shuffle(X) +X) ,12) ) +transpose(arpeggio(((transpose(X,-5) +transpose(transpose(((X|X) |step(X,12) ) ,-7) ,12) ) +transpose((((echo(X,4,6) +transpose((X+((X+transpose(X,12) ) |echo(X,4,6) ) ) ,4) ) +transpose((((arpeggio(X) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) +transpose(echo(arpeggio(X) ,4,6) ,7) ) ,7) ) +transpose(((X+transpose(X,4) ) |(((shuffle(X) +transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) +transpose(X,7) ) ) ,12) ) ,7) ) ) ,7) ) ,4) +transpose((transpose(shuffle(step((X|X) ,12) ) ,-5) +transpose(transpose(transpose(step(echo(X,4,6) ,12) ,-5) ,-7) ,7) ) ,7) ) +transpose(transpose(((echo(X,4,6) +transpose(echo(transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,-7) ,4,6) ,12) ) +transpose(arpeggio((transpose(transpose(X,-7) ,-5) |(X+X) ) ) ,7) ) ,-7) ,7) ) ) ) ,4,6) +(step(transpose(transpose(shuffle(echo((step((((echo(arpeggio(arpeggio((X+X) ) ) ,4,6) +transpose(arpeggio(transpose(X,-5) ) ,4) ) +transpose(((shuffle(X) +transpose((transpose(step(X,12) ,-7) |(arpeggio(X) +transpose((X+transpose(X,7) ) ,7) ) ) ,4) ) +transpose(step((X|X) ,12) ,7) ) ,7) ) +transpose(echo((step((X|transpose(X,-5) ) ,12) +X) ,4,6) ,12) ) ,12) |(((step(X,12) +transpose((X+transpose(echo(X,4,6) ,12) ) ,7) ) +transpose(shuffle(transpose(transpose(X,-5) ,-5) ) ,12) ) +shuffle((X+transpose(step(((transpose(X,-7) |X) +echo((X+transpose(shuffle(X) ,7) ) ,4,6) ) ,12) ,7) ) ) ) ) ,4,6) ) ,4) ,-7) ,12) |((arpeggio(((transpose(transpose(transpose((X+transpose(X,7) ) ,4) ,-7) ,4) |transpose((X+transpose(shuffle(transpose(X,4) ) ,7) ) ,-7) ) +transpose((transpose((X+transpose(X,7) ) ,4) +transpose(((X+transpose(transpose(X,-7) ,7) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,12) ) +transpose(arpeggio(X) ,12) ) ,7) ) ,7) ) ,12) ) ) |shuffle(((transpose((echo(shuffle(X) ,4,6) +transpose(transpose(transpose(step(X,12) ,-7) ,-7) ,7) ) ,-7) +transpose(echo(step((echo((X+transpose(X,12) ) ,4,6) +transpose(((arpeggio((X+transpose(X,7) ) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) ,12) ,4,6) ,4) ) +transpose(arpeggio(step(((X|step(X,12) ) +transpose(transpose(shuffle(X) ,-7) ,4) ) ,12) ) ,7) ) ) ) +transpose((shuffle(arpeggio((step(((arpeggio(X) +transpose((X|X) ,4) ) +transpose(X,7) ) ,12) +transpose(((step(transpose(arpeggio(X) ,4) ,12) +transpose(transpose(echo(transpose(X,-7) ,4,6) ,-5) ,12) ) +transpose(arpeggio((echo(transpose(X,4) ,4,6) +(transpose(arpeggio(X) ,-7) +transpose(((X+X) +echo(X,4,6) ) ,7) ) ) ) ,7) ) ,12) ) ) ) +step(arpeggio(transpose((arpeggio(transpose((X|X) ,-7) ) +transpose(echo(transpose(X,-5) ,4,6) ,7) ) ,-5) ) ,12) ) ,7) ) ) )
random seed used was 0 EXPR = step(((arpeggio(transpose(((transpose(arpeggio(((transpose(shuffle(((step(X,12) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,12) ) ,7) ) ,4) ) +transpose(arpeggio(X) ,7) ) ) ,4) +transpose(arpeggio(X) ,4) ) +transpose(((transpose(arpeggio(echo(X,4,6) ) ,-5) +transpose(((echo(X,4,6) |X) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |step(X,12) ) ,12) ) ,4) ) +transpose(step(echo((X|X) ,4,6) ,12) ,7) ) ,7) ) ) ,-7) +transpose((((((X+(X+transpose(arpeggio(X) ,7) ) ) +transpose((arpeggio((X+transpose(X,7) ) ) +transpose(transpose(arpeggio(X) ,-5) ,12) ) ,7) ) +arpeggio(X) ) +transpose(arpeggio(((transpose(X,4) +transpose(step(transpose(X,4) ,12) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |(X+transpose(X,7) ) ) ,12) ) ) ,12) ) +(((((shuffle(X) |(transpose(X,4) |shuffle(X) ) ) +transpose(echo(X,4,6) ,12) ) +transpose(shuffle((transpose((X+transpose((X|X) ,7) ) ,-5) |(((X+transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose(shuffle(X) ,7) ) ) ) ,7) ) +transpose(transpose(((((X+X) +transpose((X|X) ,4) ) +transpose((X+transpose((X|X) ,7) ) ,7) ) +transpose(((X+transpose(X,12) ) +transpose(shuffle(X) ,12) ) ,7) ) ,-5) ,4) ) +transpose(shuffle(transpose(shuffle(X) ,4) ) ,7) ) ) ,7) ) +transpose((echo(((transpose(step(transpose(X,-7) ,12) ,-7) +transpose(shuffle(arpeggio(transpose((((transpose(X,4) +transpose(X,12) ) +transpose((step(X,12) |transpose(X,-5) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ,-7) ) ) ,4) ) +transpose(transpose(((((shuffle((X|(X+transpose(X,7) ) ) ) +transpose(shuffle((X+X) ) ,7) ) +transpose(echo(transpose((X|X) ,-7) ,4,6) ,12) ) |((echo(transpose(transpose(X,-5) ,-5) ,4,6) +transpose(transpose(((arpeggio(X) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,-5) ,7) ) ,-5) ,4) ) +transpose(step((((X+transpose(X,12) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ,12) ,7) ) ) |(echo(echo((arpeggio(X) |transpose(X,-5) ) ,4,6) ,4,6) +transpose((X+step(arpeggio(arpeggio(X) ) ,12) ) ,7) ) ) ,-7) ,7) ) ,4,6) +transpose(((transpose(arpeggio(step(X,12) ) ,4) |(shuffle(echo(X,4,6) ) |transpose(arpeggio(X) ,-7) ) ) +transpose(transpose(((((shuffle(X) +transpose((X|shuffle(X) ) ,7) ) +((X+transpose(X,12) ) +step(step(X,12) ,12) ) ) |((((shuffle(X) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,-7) ,7) ) +transpose(transpose(X,-7) ,4) ) +transpose((X|X) ,7) ) ) |transpose(step(step(X,12) ,12) ,-5) ) ,4) ,7) ) ,7) ) ,7) ) ,-5) ) |(((((echo(arpeggio(X) ,4,6) +transpose(echo(transpose((X+transpose(X,7) ) ,4) ,4,6) ,4) ) +transpose(((X+transpose(step(X,12) ,12) ) |(arpeggio(shuffle(X) ) +transpose(shuffle(X) ,7) ) ) ,4) ) +transpose(transpose(echo(step(arpeggio(X) ,12) ,4,6) ,-7) ,7) ) +transpose(shuffle(step(arpeggio(step(X,12) ) ,12) ) ,-7) ) +transpose(arpeggio((((((echo(echo(echo(arpeggio(echo(X,4,6) ) ,4,6) ,4,6) ,4,6) +transpose(shuffle((step(X,12) +transpose((X+X) ,12) ) ) ,7) ) +transpose(((step(step(echo(transpose(((arpeggio((X+transpose(X,7) ) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(shuffle(X) ,7) ) ,4) ,4,6) ,12) ,12) +transpose(transpose((((transpose(X,4) +transpose(step(X,12) ,4) ) +transpose(transpose(X,-5) ,7) ) +transpose(echo(step(X,12) ,4,6) ,7) ) ,-7) ,4) ) +transpose(shuffle(arpeggio((X|shuffle(arpeggio(X) ) ) ) ) ,7) ) ,7) ) +((transpose(X,4) |arpeggio((step((X+X) ,12) +transpose(transpose(step(X,12) ,-7) ,7) ) ) ) |step(((echo((echo(transpose(X,-7) ,4,6) +transpose(X,-5) ) ,4,6) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose(echo(((arpeggio(X) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,7) ) +((shuffle(X) +transpose(arpeggio(X) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ,4,6) ,7) ) ,12) ) ) +transpose(((((((X+shuffle(X) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) +transpose(step(echo(((step((X+transpose(X,12) ) ,12) +transpose(echo(X,4,6) ,7) ) +transpose((step((X+transpose(X,7) ) ,12) +transpose((X+transpose(X,7) ) ,12) ) ,7) ) ,4,6) ,12) ,4) ) +transpose(shuffle(echo(transpose(echo(arpeggio((X+transpose(X,7) ) ) ,4,6) ,-7) ,4,6) ) ,7) ) +transpose(((transpose(transpose(transpose((transpose(transpose(X,4) ,4) +transpose(arpeggio(step(X,12) ) ,7) ) ,4) ,-7) ,-5) +transpose(step(echo(transpose(step(X,12) ,-7) ,4,6) ,12) ,4) ) +transpose(((((echo(X,4,6) +transpose(X,7) ) +(arpeggio((transpose(X,-5) |transpose(X,-5) ) ) +transpose((step((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ,7) ) ) +transpose(step((transpose(transpose(X,4) ,-7) +transpose(transpose((arpeggio(X) +X) ,4) ,12) ) ,12) ,4) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,-7) ,7) ) +(((arpeggio(X) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(((arpeggio(transpose(X,-5) ) +transpose(echo(X,4,6) ,4) ) +transpose(echo((X+X) ,4,6) ,7) ) ,7) ) ) ,7) ) ,7) ) ,12) ) ,7) ) +transpose(((transpose(shuffle((((transpose(arpeggio(arpeggio(step(X,12) ) ) ,-7) +(transpose((X|X) ,-7) +transpose(transpose(X,-5) ,-7) ) ) +transpose(step(arpeggio((transpose((X+transpose(X,7) ) ,-5) |(X+transpose(echo(transpose(X,4) ,4,6) ,12) ) ) ) ,12) ,4) ) +transpose(transpose(step(echo(arpeggio((X+transpose(X,12) ) ) ,4,6) ,12) ,4) ,7) ) ) ,-7) +transpose(transpose((arpeggio(arpeggio(echo(((X+X) |(X+transpose(X,7) ) ) ,4,6) ) ) +arpeggio(((((((X+transpose(X,4) ) +transpose(X,7) ) |(X|(X|X) ) ) +transpose(arpeggio(step(X,12) ) ,4) ) +transpose(arpeggio(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ,7) ) |((step(X,12) +transpose(echo(X,4,6) ,7) ) +transpose(arpeggio((X|X) ) ,7) ) ) ) ) ,-7) ,4) ) +transpose((shuffle(step((X+transpose(X,7) ) ,12) ) +shuffle((((X|X) +transpose(((X+transpose(X,12) ) +transpose((X|X) ,7) ) ,4) ) +transpose(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ,7) ) ) ) ,7) ) ,7) ) ) ,7) ) ) +transpose(shuffle((transpose(echo(((transpose(((arpeggio(transpose(((echo(X,4,6) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,-5) ) +transpose(arpeggio(echo(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4,6) ) ,12) ) +transpose(((echo(arpeggio(X) ,4,6) +transpose((((echo(X,4,6) +transpose(step(X,12) ,12) ) |step((X+transpose(X,7) ) ,12) ) +transpose((shuffle(X) +transpose(echo(transpose(X,-5) ,4,6) ,7) ) ,7) ) ,7) ) +transpose(step(((arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) |arpeggio(X) ) ) +transpose((X+transpose(arpeggio(X) ,7) ) ,4) ) +transpose(transpose(X,-7) ,7) ) ,12) ,7) ) ,7) ) ,4) +transpose((transpose((((((((((arpeggio(transpose(X,-7) ) +transpose(arpeggio(arpeggio(X) ) ,4) ) +transpose(transpose((arpeggio(X) +transpose(X,12) ) ,-7) ,7) ) +transpose(shuffle(X) ,4) ) +transpose(step(arpeggio(arpeggio(X) ) ,12) ,7) ) +transpose(shuffle(arpeggio(arpeggio((X+transpose(X,7) ) ) ) ) ,4) ) +transpose(shuffle((((X+transpose(X,4) ) +transpose(shuffle(X) ,7) ) +echo(X,4,6) ) ) ,7) ) +transpose(((X+transpose((X|X) ,12) ) |(((X+transpose((X|X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) +transpose((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ) ,-5) ) +transpose(echo(transpose(step(step(transpose(X,-7) ,12) ,12) ,-7) ,4,6) ,4) ) +transpose(arpeggio(transpose(arpeggio((X+transpose(X,7) ) ) ,-5) ) ,7) ) ,-7) |transpose((transpose(((transpose(X,-7) +transpose(transpose(X,-5) ,7) ) +transpose(step(transpose(X,-7) ,12) ,7) ) ,4) +transpose(shuffle((echo((X+X) ,4,6) +X) ) ,7) ) ,-5) ) ,4) ) +transpose(transpose((echo((step((X|X) ,12) +X) ,4,6) +transpose(transpose((transpose((X+transpose(X,7) ) ,4) +transpose((X+transpose(X,12) ) ,12) ) ,4) ,7) ) ,4) ,7) ) ,4,6) ,-7) +transpose((echo(((echo(step(arpeggio(X) ,12) ,4,6) +transpose((arpeggio(transpose(X,-5) ) +transpose(step(transpose((X+transpose(transpose(X,4) ,7) ) ,-5) ,12) ,-5) ) ,4) ) +transpose(arpeggio((echo((arpeggio(((X+transpose(transpose(X,-7) ,4) ) +transpose(arpeggio(X) ,7) ) ) +transpose(transpose(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ,7) ) ,4,6) +shuffle(((shuffle(X) +transpose((shuffle(X) +transpose(step(X,12) ,7) ) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ) ) ,7) ) ,4,6) +transpose(transpose(shuffle(transpose(((shuffle(echo((X+transpose(X,7) ) ,4,6) ) +transpose(echo((((X|X) +transpose(arpeggio(X) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ,4,6) ,4) ) +transpose(((arpeggio(X) +transpose(transpose(X,4) ,7) ) +transpose(((X|(X+X) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,7) ) ,-5) ) ,4) ,7) ) ,7) ) ) ,7) ) ,12)
random seed used was 0 EXPR = ((transpose(echo(shuffle((transpose(step((echo(X,4,6) +transpose((X+transpose(step(X,12) ,7) ) ,7) ) ,12) ,4) +transpose(transpose(transpose(echo(arpeggio((X+X) ) ,4,6) ,4) ,-7) ,7) ) ) ,4,6) ,-7) +transpose(step(((((arpeggio((shuffle(echo((X+X) ,4,6) ) +transpose((shuffle(arpeggio(X) ) +transpose(transpose(transpose(X,-5) ,4) ,7) ) ,12) ) ) +transpose(transpose((((((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,-5) ) +transpose((transpose(X,-7) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,-7) ,7) ) +transpose(transpose(step(((X+transpose(X,7) ) +X) ,12) ,-5) ,12) ) +((shuffle(X) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,4) ,4) ) +transpose(X,7) ) +transpose(X,7) ) ,7) ) +transpose((shuffle(shuffle(((echo(X,4,6) +transpose(step(X,12) ,4) ) +transpose((X+X) ,7) ) ) ) +transpose(shuffle(transpose(echo(X,4,6) ,4) ) ,12) ) ,12) ) ) |((arpeggio((echo(arpeggio(X) ,4,6) +transpose((X+transpose((X+X) ,12) ) ,7) ) ) |transpose(shuffle((X+transpose(X,7) ) ) ,-5) ) +transpose(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(X,12) ) ,4) ) ) ,12) ,7) ) +transpose((((((transpose((transpose(arpeggio((step(echo(X,4,6) ,12) |echo(shuffle(transpose((X+transpose(X,7) ) ,4) ) ,4,6) ) ) ,4) +transpose(echo(transpose((arpeggio(X) |(X+X) ) ,-5) ,4,6) ,12) ) ,-5) +transpose(step(step((echo(transpose((step(step(X,12) ,12) +arpeggio(X) ) ,4) ,4,6) |step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,12) ,12) ,4) ) +transpose(transpose(((((((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) +transpose(transpose(transpose(transpose(X,4) ,4) ,4) ,12) ) +transpose(transpose((arpeggio((arpeggio(step(transpose(X,-5) ,12) ) +transpose(shuffle(step(X,12) ) ,12) ) ) |(echo((((shuffle(step(X,12) ) +transpose(shuffle(arpeggio(X) ) ,4) ) +transpose(transpose((X+X) ,4) ,7) ) +(((((X+transpose(X,7) ) +transpose(arpeggio(X) ,4) ) +transpose(shuffle(X) ,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ,4,6) +transpose(echo(((X+transpose(transpose(X,4) ,12) ) +transpose(transpose((X+transpose(transpose(X,-7) ,7) ) ,4) ,7) ) ,4,6) ,12) ) ) ,4) ,4) ) +transpose(transpose((echo((echo(X,4,6) +step(((X+transpose(step(step(X,12) ,12) ,4) ) +transpose(shuffle(shuffle(X) ) ,7) ) ,12) ) ,4,6) +transpose((((X+transpose(X,7) ) +transpose(((arpeggio(X) +transpose((X+transpose(X,7) ) ,12) ) +transpose(transpose(echo(X,4,6) ,4) ,7) ) ,4) ) +transpose((echo(X,4,6) +transpose(X,7) ) ,7) ) ,7) ) ,4) ,7) ) +transpose((transpose(echo((((X+transpose(X,7) ) +transpose((X+X) ,7) ) +transpose(X,7) ) ,4,6) ,4) +((echo(transpose(transpose(((echo(X,4,6) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,4) ,-5) ,4,6) +arpeggio(echo(((transpose(X,4) +transpose(X,4) ) +transpose(X,7) ) ,4,6) ) ) +(((transpose(transpose(X,-5) ,-7) +transpose((step(X,12) +transpose(X,7) ) ,7) ) +transpose(((X+transpose(((step((transpose(X,-7) +transpose(shuffle(X) ,12) ) ,12) +transpose(shuffle((transpose(X,4) |step(X,12) ) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose((X|step((X+transpose(X,7) ) ,12) ) ,7) ) ,4) ) +transpose(transpose(((X+transpose(transpose(transpose(X,-7) ,-5) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,-5) ,7) ) ) ) ,4) ) +transpose(transpose(((echo((echo(X,4,6) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4,6) |echo(transpose(X,-7) ,4,6) ) +transpose(shuffle(((transpose(transpose(X,4) ,-5) +transpose(shuffle(X) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,12) ) ,7) ) ) ,12) ) ,-7) ,7) ) ,-5) ,7) ) +transpose((shuffle((((echo(step(((X+X) +(X+transpose(X,7) ) ) ,12) ,4,6) |(step(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) +transpose(echo(transpose(arpeggio(X) ,-7) ,4,6) ,7) ) ) +transpose(transpose((shuffle(shuffle(transpose(step(X,12) ,-7) ) ) +((((X+transpose(X,7) ) +transpose((((X+X) +transpose((X|X) ,4) ) +transpose(X,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) +((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) +transpose(shuffle(X) ,7) ) ) ) ,4) ,4) ) +transpose((echo(transpose(arpeggio((X+transpose(X,12) ) ) ,4) ,4,6) +transpose(arpeggio((shuffle(X) +X) ) ,7) ) ,7) ) ) |shuffle(echo(arpeggio((X+transpose((X+transpose(X,7) ) ,7) ) ) ,4,6) ) ) ,4) ) +transpose(transpose(transpose(transpose(((((((X+transpose(X,7) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(step(X,12) ,4) ) +transpose(echo((X|X) ,4,6) ,7) ) +transpose(step(((step(X,12) |X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ,4) ) +transpose(shuffle(shuffle(transpose(transpose(X,-5) ,4) ) ) ,7) ) ,-5) ,4) ,4) ,7) ) |transpose((echo((((shuffle(transpose(arpeggio((arpeggio(((echo(echo(X,4,6) ,4,6) +transpose(step((X+X) ,12) ,4) ) +transpose(shuffle(step(X,12) ) ,7) ) ) +echo((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,4) ,7) ) ,4,6) ) ) ,-5) ) +transpose(((shuffle((transpose(((transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,-5) |(((transpose(X,4) +transpose(transpose(X,4) ,4) ) +transpose(transpose(shuffle(X) ,-5) ,7) ) +transpose(transpose(X,4) ,7) ) ) ) +transpose(shuffle((arpeggio((((step(X,12) +transpose((((X+X) +transpose((X+transpose(X,12) ) ,4) ) +transpose(step(X,12) ,7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose((X+transpose(transpose(X,-5) ,7) ) ,12) ) ) +transpose((step(X,12) +(transpose((X|X) ,-5) |shuffle((X+X) ) ) ) ,7) ) ) ,4) ) +transpose(((shuffle(step(arpeggio((X+transpose(X,7) ) ) ,12) ) +transpose(arpeggio(((((shuffle(shuffle(X) ) +transpose(((X+X) +transpose(X,7) ) ,4) ) +transpose((step((X+transpose(X,7) ) ,12) |echo(X,4,6) ) ,7) ) +transpose((echo(X,4,6) +(transpose(X,-7) +transpose(X,12) ) ) ,4) ) +transpose((arpeggio(((echo(X,4,6) +transpose((X|X) ,4) ) +transpose(X,7) ) ) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ,7) ) ) ,4) ) +transpose(((shuffle((((X+transpose(X,7) ) +transpose(X,7) ) +arpeggio(((X|X) |X) ) ) ) +transpose(step(transpose(arpeggio(X) ,-7) ,12) ,4) ) +transpose((transpose(X,4) |(X+X) ) ,7) ) ,7) ) ,7) ) ,4) ) +transpose(((((arpeggio(transpose(X,-7) ) +(((arpeggio(X) +transpose(shuffle(X) ,7) ) +transpose(X,4) ) +transpose(step(arpeggio(X) ,12) ,7) ) ) +transpose(((step(X,12) +transpose(((echo(X,4,6) +transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ,4) ) +transpose(step(X,12) ,7) ) ,4) ) +transpose(((X+(arpeggio(X) +(X+X) ) ) +((arpeggio(X) +transpose(transpose(transpose(X,-5) ,4) ,4) ) +transpose(X,7) ) ) ,7) ) +transpose(transpose(step(shuffle((X|transpose(X,-7) ) ) ,12) ,-7) ,7) ) ,7) ) +transpose(transpose(arpeggio(shuffle(shuffle(transpose(arpeggio(shuffle(X) ) ,4) ) ) ) ,-7) ,7) ) ,4,6) +transpose((transpose(((shuffle(transpose((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-7) ) +transpose(step(transpose(transpose(echo(X,4,6) ,-5) ,4) ,12) ,7) ) |arpeggio(transpose(echo(arpeggio((X+transpose(X,7) ) ) ,4,6) ,-7) ) ) ,-7) +transpose(transpose(((((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((((X+X) +transpose(X,12) ) +transpose(arpeggio(transpose(X,-5) ) ,7) ) ,7) ) +(((X+transpose(echo(X,4,6) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,7) ) ) |echo(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,4,6) ) +transpose(((shuffle(arpeggio(X) ) +transpose(((arpeggio(X) +transpose(step(X,12) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(transpose(step(echo(X,4,6) ,12) ,4) ,7) ) ,4) ) +transpose(((((X+transpose(step(X,12) ,4) ) +transpose(transpose(X,-5) ,7) ) +transpose(((echo(X,4,6) +transpose(X,7) ) +transpose(step(transpose(X,-7) ,12) ,7) ) ,7) ) +transpose((transpose((echo(X,4,6) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) +transpose(shuffle((X+transpose(X,7) ) ) ,7) ) ,7) ) ,7) ) +echo(((X+transpose(X,7) ) +transpose((transpose(X,-5) |step(transpose(X,4) ,12) ) ,7) ) ,4,6) ) ,-5) ,7) ) ,7) ) ,4) ) ,12) )
random seed used was 0


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