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 20 generations the expression "X" became this:
arpeggio(transpose(arpeggio(((((step(transpose(echo(step(X,12) ,4,6) ,-5) ,12) |(step((((transpose(transpose(transpose(X,-7) ,-7) ,-7) |(X+transpose(X,-7) ) ) +transpose((arpeggio(arpeggio(X) ) +transpose(transpose(((transpose(X,-7) |X) +transpose(transpose((X+transpose(X,7) ) ,-7) ,12) ) ,-5) ,12) ) ,4) ) +transpose(step(echo(arpeggio(X) ,4,6) ,12) ,7) ) ,12) +transpose(echo((((transpose(shuffle(X) ,4) |(X+echo(X,4,6) ) ) +transpose(arpeggio(echo(X,4,6) ) ,-7) ) +transpose((((echo((X|X) ,4,6) +transpose((step(X,12) +X) ,7) ) +transpose(step(echo(X,4,6) ,12) ,4) ) +transpose(step(transpose(echo(X,4,6) ,-5) ,12) ,7) ) ,7) ) ,4,6) ,-5) ) ) +transpose((arpeggio(echo(echo(step(shuffle(echo(arpeggio(step(X,12) ) ,4,6) ) ,12) ,4,6) ,4,6) ) |shuffle(arpeggio(arpeggio(arpeggio(X) ) ) ) ) ,12) ) +((((step((((((echo((X+transpose(X,7) ) ,4,6) |transpose(((X+transpose((X|X) ,4) ) +transpose(step(X,12) ,7) ) ,-7) ) +arpeggio(transpose(echo(X,4,6) ,-7) ) ) +transpose(((transpose(shuffle(X) ,4) +transpose(echo(echo((X+transpose(X,12) ) ,4,6) ,4,6) ,12) ) |(echo(X,4,6) +transpose((X|X) ,4) ) ) ,-7) ) +transpose(echo(arpeggio((echo(transpose(transpose(arpeggio(X) ,4) ,-5) ,4,6) +transpose((arpeggio(echo((X|X) ,4,6) ) |(echo(X,4,6) |X) ) ,7) ) ) ,4,6) ,4) ) +transpose(arpeggio(transpose(transpose(arpeggio(step(step(arpeggio(X) ,12) ,12) ) ,-5) ,-5) ) ,7) ) ,12) |arpeggio(((((echo(((X+transpose(X,12) ) |echo(X,4,6) ) ,4,6) +transpose((shuffle(shuffle(X) ) +transpose(step(X,12) ,12) ) ,12) ) +arpeggio((X+X) ) ) +transpose(((echo(shuffle(echo(X,4,6) ) ,4,6) |(step(transpose((X+transpose(transpose(X,-5) ,12) ) ,-5) ,12) |(echo(X,4,6) |X) ) ) +arpeggio(arpeggio(((((X+transpose(X,4) ) +transpose(X,7) ) |step(X,12) ) |shuffle(step((X+transpose(X,12) ) ,12) ) ) ) ) ) ,4) ) +transpose(step(((echo(shuffle(X) ,4,6) +step(transpose(transpose(X,-7) ,-5) ,12) ) +shuffle((shuffle(X) +X) ) ) ,12) ,7) ) ) ) |(step((transpose(transpose(echo(arpeggio(arpeggio(transpose(X,-7) ) ) ,4,6) ,-7) ,4) +transpose((transpose((((transpose(X,-5) +transpose(X,12) ) +transpose(echo(X,4,6) ,4) ) +transpose((X|X) ,7) ) ,4) +transpose(transpose((transpose((X|X) ,-5) |step(X,12) ) ,-7) ,7) ) ,7) ) ,12) |(transpose(((transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-5) +transpose(transpose(((X+shuffle(X) ) +transpose(transpose(X,4) ,7) ) ,4) ,7) ) |((((step(X,12) +transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(arpeggio(transpose(X,-7) ) ,-5) ,7) ) +transpose(step(shuffle(transpose(transpose(X,-5) ,-5) ) ,12) ,12) ) +transpose((((transpose(X,-7) +echo(X,4,6) ) |transpose(shuffle(shuffle(X) ) ,4) ) +transpose(transpose(((echo(X,4,6) +transpose((X|transpose(X,-7) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,-5) ,12) ) ,12) ) ) ,-5) +transpose(arpeggio(echo(echo(transpose((X+arpeggio(X) ) ,4) ,4,6) ,4,6) ) ,4) ) ) ) +transpose(shuffle((((((shuffle((X+transpose(X,12) ) ) +(X+X) ) +(transpose(transpose(X,4) ,-5) +transpose(shuffle(X) ,-5) ) ) +transpose(step(transpose(echo(X,4,6) ,-5) ,12) ,12) ) +transpose(transpose(step(shuffle(X) ,12) ,-7) ,12) ) |((transpose(transpose(echo(transpose((X|X) ,-5) ,4,6) ,-7) ,-5) +transpose(transpose(shuffle(step((step(X,12) +echo(shuffle(X) ,4,6) ) ,12) ) ,4) ,4) ) +transpose((shuffle(echo(transpose(echo(X,4,6) ,4) ,4,6) ) +arpeggio(transpose((X+transpose(arpeggio(X) ,7) ) ,-7) ) ) ,7) ) ) ) ,7) ) |shuffle(shuffle(echo(((step(transpose(transpose(shuffle(arpeggio(X) ) ,-7) ,4) ,12) +transpose((step(step(arpeggio(X) ,12) ,12) |(echo(arpeggio(X) ,4,6) |((echo(shuffle((X|X) ) ,4,6) +transpose(transpose(echo(X,4,6) ,4) ,4) ) +transpose(shuffle((transpose(X,4) |X) ) ,7) ) ) ) ,7) ) +(transpose(arpeggio(((echo((X+X) ,4,6) +(step(X,12) +transpose(shuffle(X) ,7) ) ) +transpose((transpose(X,4) +transpose(transpose((X+X) ,-5) ,7) ) ,7) ) ) ,4) |echo((transpose(echo(X,4,6) ,-5) +transpose(shuffle(X) ,7) ) ,4,6) ) ) ,4,6) ) ) ) ) +(((step(((arpeggio(arpeggio(transpose(transpose(step(echo(arpeggio(X) ,4,6) ,12) ,4) ,4) ) ) +transpose(transpose(transpose(((X|((X|X) +X) ) +transpose(arpeggio((shuffle(arpeggio(X) ) +transpose(transpose(transpose(X,4) ,4) ,7) ) ) ,7) ) ,-5) ,4) ,4) ) +transpose(step(echo(echo(transpose(echo(transpose((arpeggio(X) +transpose(transpose(X,-5) ,7) ) ,-5) ,4,6) ,-5) ,4,6) ,4,6) ,12) ,7) ) ,12) +transpose((transpose(arpeggio(((((arpeggio(X) +transpose(step(transpose(X,4) ,12) ,7) ) +transpose((transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) |(arpeggio(X) +transpose(echo(transpose(X,-5) ,4,6) ,7) ) ) ,4) ) +transpose(transpose(transpose(transpose(X,-5) ,-5) ,-7) ,7) ) +transpose((((X|X) +transpose(arpeggio((X+transpose(X,7) ) ) ,12) ) +step(((X+X) +X) ,12) ) ,7) ) ) ,-7) |echo(transpose(transpose(shuffle((echo(arpeggio(echo(X,4,6) ) ,4,6) |echo(X,4,6) ) ) ,-7) ,-7) ,4,6) ) ,7) ) |step(((echo(((echo((transpose(step(X,12) ,-7) +transpose(transpose(arpeggio(X) ,4) ,12) ) ,4,6) +((transpose(arpeggio(arpeggio(X) ) ,-7) +transpose(transpose(step(transpose(X,-5) ,12) ,4) ,4) ) +transpose(transpose(((X+transpose(X,7) ) +transpose(shuffle(X) ,7) ) ,-7) ,7) ) ) +transpose((((transpose(((((X|X) +transpose((X|X) ,4) ) +transpose(X,7) ) +transpose(transpose(step(X,12) ,4) ,12) ) ,-7) +transpose(transpose(shuffle(step(X,12) ) ,4) ,12) ) +(step((((X+transpose(X,4) ) +transpose(X,7) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) +arpeggio(transpose(X,-7) ) ) ) +transpose(transpose(step(arpeggio(shuffle(X) ) ,12) ,-7) ,12) ) ,12) ) ,4,6) +transpose(((((shuffle(arpeggio(((shuffle(shuffle(step(X,12) ) ) +transpose(transpose(transpose(transpose(shuffle(X) ,-5) ,4) ,-7) ,4) ) +transpose(arpeggio(transpose(transpose(echo(X,4,6) ,4) ,-5) ) ,7) ) ) ) +transpose(echo(echo(shuffle(step(arpeggio(transpose(X,-7) ) ,12) ) ,4,6) ,4,6) ,4) ) +transpose(transpose(shuffle(shuffle(((((echo((X+X) ,4,6) +transpose(transpose((X|X) ,-7) ,12) ) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose(X,7) ) |transpose(echo(((echo(X,4,6) |(X+transpose(X,12) ) ) |shuffle(X) ) ,4,6) ,4) ) ) ) ,4) ,7) ) +transpose((transpose(echo(transpose(echo((arpeggio(echo((arpeggio(X) |transpose(X,-7) ) ,4,6) ) +transpose(transpose(transpose(transpose(X,-7) ,-7) ,4) ,4) ) ,4,6) ,4) ,4,6) ,-5) +transpose(arpeggio((((step(step(shuffle(X) ,12) ,12) +transpose(((((transpose((X|X) ,-5) +echo(shuffle(X) ,4,6) ) |(transpose(echo(step(X,12) ,4,6) ,-5) +transpose((transpose(transpose(X,-5) ,-7) +transpose(shuffle(arpeggio(X) ) ,7) ) ,12) ) ) +transpose(arpeggio(transpose(echo(X,4,6) ,-7) ) ,4) ) +transpose(step(step(arpeggio(step(transpose(X,4) ,12) ) ,12) ,12) ,7) ) ,4) ) +transpose(transpose(step(arpeggio((transpose((X+transpose(X,7) ) ,-7) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,7) ) ) ,12) ,-5) ,7) ) |(transpose(((echo(X,4,6) +transpose(arpeggio(X) ,4) ) +transpose(arpeggio(X) ,7) ) ,-5) +arpeggio((arpeggio(arpeggio(X) ) +echo(arpeggio(X) ,4,6) ) ) ) ) ) ,7) ) ,4) ) +transpose(((shuffle(echo(step(arpeggio(arpeggio((X+X) ) ) ,12) ,4,6) ) +transpose(((arpeggio((X+((X+transpose(X,12) ) |X) ) ) +transpose((echo(arpeggio((X+transpose(X,7) ) ) ,4,6) |(((X+transpose(step(X,12) ,4) ) +transpose(echo(X,4,6) ,7) ) +transpose((transpose(X,-5) +transpose(X,12) ) ,7) ) ) ,7) ) +arpeggio((transpose(X,4) +transpose((X+X) ,12) ) ) ) ,7) ) +((step(step(transpose(step((X+transpose((X|X) ,7) ) ,12) ,4) ,12) ,12) +transpose(((transpose(step((echo(X,4,6) |step(X,12) ) ,12) ,4) |(arpeggio(transpose(step((X+arpeggio(step(X,12) ) ) ,12) ,-7) ) +transpose(transpose(transpose(((X|X) +X) ,-7) ,-7) ,12) ) ) +shuffle(echo(transpose(shuffle(((transpose(shuffle(X) ,4) +transpose((X+X) ,4) ) |(X+transpose((X|X) ,12) ) ) ) ,-7) ,4,6) ) ) ,4) ) +transpose((((transpose(arpeggio((((transpose(X,-7) +transpose(step(X,12) ,12) ) +transpose((arpeggio(X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(arpeggio(X) ,7) ) ) ,4) |(transpose((X+transpose(shuffle(X) ,7) ) ,4) +step(((X+X) +transpose(X,7) ) ,12) ) ) +transpose(arpeggio(echo((transpose(X,-5) +transpose((transpose(X,-5) +transpose((X+X) ,12) ) ,-7) ) ,4,6) ) ,12) ) +transpose((step(transpose(transpose(transpose(transpose(step(X,12) ,4) ,4) ,-5) ,-7) ,12) |echo(((arpeggio((X|X) ) +transpose(transpose(transpose((X|X) ,-5) ,4) ,12) ) |((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +((X+X) +transpose(X,7) ) ) |X) ) ,4,6) ) ,12) ) ,7) ) ) ,7) ) ,4) ) +transpose((arpeggio(shuffle(echo((step(step(arpeggio(arpeggio(echo(X,4,6) ) ) ,12) ,12) +transpose(step(transpose((((X+transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose(X,7) ) ,-5) ,12) ,7) ) ,4,6) ) ) +((shuffle(((shuffle((((shuffle(step(X,12) ) +transpose(X,7) ) +arpeggio(step(X,12) ) ) |echo(transpose(X,-5) ,4,6) ) ) +transpose(transpose((transpose(echo((X+transpose(X,7) ) ,4,6) ,-7) |(transpose(X,4) +echo(shuffle(X) ,4,6) ) ) ,-5) ,7) ) |(echo(step(transpose(transpose(echo(X,4,6) ,-5) ,4) ,12) ,4,6) +transpose(transpose((echo(transpose((X|X) ,-7) ,4,6) +step(transpose(X,4) ,12) ) ,4) ,12) ) ) ) +transpose((step(echo(step(echo(transpose(echo(X,4,6) ,-5) ,4,6) ,12) ,4,6) ,12) |(shuffle(echo(step(X,12) ,4,6) ) +transpose(transpose(step(transpose(X,4) ,12) ,4) ,12) ) ) ,4) ) +transpose(echo(transpose(transpose(shuffle(echo(echo(echo(X,4,6) ,4,6) ,4,6) ) ,-5) ,-7) ,4,6) ,7) ) ) ,7) ) ,12) ) |arpeggio(arpeggio(shuffle(arpeggio((((transpose(((echo(X,4,6) +X) +transpose((shuffle(arpeggio(X) ) +transpose(step(transpose(X,4) ,12) ,12) ) ,7) ) ,-5) +arpeggio((step((X+transpose(X,7) ) ,12) +((echo((transpose(X,4) +transpose(step(X,12) ,7) ) ,4,6) +(transpose(transpose(X,4) ,-7) +transpose(echo(X,4,6) ,7) ) ) +transpose(step(X,12) ,12) ) ) ) ) +transpose(shuffle(((X+transpose(X,7) ) +transpose(((shuffle(transpose(X,-7) ) +transpose(step(shuffle(X) ,12) ,7) ) +transpose((step(X,12) |(X+transpose(step(X,12) ,7) ) ) ,12) ) ,12) ) ) ,4) ) +transpose(step(echo(echo((echo(X,4,6) +transpose(shuffle(X) ,12) ) ,4,6) ,4,6) ,12) ,7) ) ) ) ) ) ) ) ) ,-5) )
random seed used was 143009853 EXPR = echo(step(step(transpose(step(echo((echo(step(transpose(transpose((X|transpose(X,-7) ) ,4) ,-7) ,12) ,4,6) +transpose(echo((transpose(transpose((arpeggio(X) |X) ,4) ,4) |((echo(echo(X,4,6) ,4,6) +((X+X) |((X+transpose(X,4) ) +transpose(shuffle(X) ,7) ) ) ) +(X|X) ) ) ,4,6) ,-5) ) ,4,6) ,12) ,-7) ,12) ,12) ,4,6)
random seed used was 0 EXPR = transpose(arpeggio(transpose(((transpose(echo(transpose(transpose(arpeggio((transpose((step(transpose(X,-5) ,12) +transpose((X+transpose(shuffle(X) ,-5) ) ,7) ) ,-7) +transpose(transpose(((transpose(echo(shuffle(X) ,4,6) ,-7) |((shuffle((transpose(X,-7) +transpose((X+X) ,12) ) ) +transpose(((echo(X,4,6) +transpose(arpeggio(echo(X,4,6) ) ,4) ) +transpose(echo(shuffle(X) ,4,6) ,7) ) ,4) ) +transpose(echo(transpose(echo(X,4,6) ,-7) ,4,6) ,7) ) ) |step(transpose(shuffle((((shuffle(X) +echo(X,4,6) ) +transpose((X+transpose(transpose(X,-5) ,7) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,-7) ,12) ) ,-5) ,12) ) ) ,-7) ,4) ,4,6) ,4) +transpose(transpose((transpose(((((shuffle(X) +transpose(echo(echo(X,4,6) ,4,6) ,4) ) +transpose(shuffle(X) ,7) ) +step(arpeggio(X) ,12) ) +step(step(X,12) ,12) ) ,4) +transpose(transpose(shuffle(echo((transpose(X,4) +transpose(transpose((((X+X) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) ,-7) ,7) ) ,4,6) ) ,-7) ,12) ) ,-5) ,4) ) +transpose(shuffle(((echo(((((transpose(X,-5) +transpose(X,7) ) +transpose(X,12) ) +transpose(arpeggio(X) ,7) ) |step((shuffle(X) |(((X+transpose(X,12) ) |(X|X) ) +echo(step((X+X) ,12) ,4,6) ) ) ,12) ) ,4,6) +transpose(echo(step((X|X) ,12) ,4,6) ,12) ) +transpose((step(step(transpose(echo(echo((((shuffle(((X|X) +transpose(step(X,12) ,7) ) ) +echo(shuffle(X) ,4,6) ) |step(transpose(X,-7) ,12) ) +((((X+transpose(X,4) ) +transpose(X,7) ) |(X+transpose(X,-5) ) ) +transpose((((X|echo(X,4,6) ) +transpose(X,4) ) +transpose(step(X,12) ,7) ) ,7) ) ) ,4,6) ,4,6) ,-5) ,12) ,12) +transpose(step((step(step((step(step(X,12) ,12) +transpose(arpeggio(echo(X,4,6) ) ,7) ) ,12) ,12) +step(transpose(transpose(shuffle(step(X,12) ) ,-5) ,4) ,12) ) ,12) ,7) ) ,12) ) ) ,7) ) ,4) ) ,-7)
random seed used was 0 EXPR = (((transpose(step((arpeggio((((transpose(X,-7) +X) +arpeggio(shuffle(X) ) ) +transpose(((arpeggio(X) +transpose(arpeggio(X) ,12) ) |(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +arpeggio(X) ) ) ,7) ) ) |transpose((transpose((((transpose(X,-7) +transpose(X,12) ) +((X+transpose(X,12) ) +(X+X) ) ) +arpeggio((X+transpose(X,7) ) ) ) ,-5) +(step(((step(X,12) +X) |(X+transpose(X,12) ) ) ,12) |shuffle(arpeggio(((X+transpose(X,7) ) +transpose(step(X,12) ,7) ) ) ) ) ) ,4) ) ,12) ,-5) |((transpose(step(transpose(echo(transpose((transpose((X+transpose(X,12) ) ,-7) +transpose((transpose(step(X,12) ,-7) |((transpose(X,-7) +transpose(transpose(X,4) ,-7) ) +(arpeggio(transpose(X,4) ) +X) ) ) ,7) ) ,4) ,4,6) ,-5) ,12) ,-5) +transpose(shuffle((transpose(arpeggio(arpeggio(((transpose(X,4) +transpose(step(transpose(arpeggio(step(X,12) ) ,-5) ,12) ,4) ) +transpose(((echo(X,4,6) +transpose(arpeggio(transpose(X,-5) ) ,4) ) +transpose(X,7) ) ,7) ) ) ) ,4) |echo((step(echo(((transpose(X,-5) +(X+transpose(X,12) ) ) |arpeggio((step(X,12) +transpose(transpose((X|X) ,4) ,7) ) ) ) ,4,6) ,12) |echo(transpose(shuffle(((echo(X,4,6) +transpose(transpose((X+transpose(X,7) ) ,4) ,12) ) |X) ) ,4) ,4,6) ) ,4,6) ) ) ,4) ) +transpose((echo(echo(arpeggio(step(transpose(transpose(step(shuffle(arpeggio(transpose(X,4) ) ) ,12) ,-5) ,-5) ,12) ) ,4,6) ,4,6) |transpose((shuffle(transpose(echo((transpose(arpeggio(shuffle(echo((X|X) ,4,6) ) ) ,-7) +transpose(arpeggio((step(X,12) +transpose(echo(X,4,6) ,12) ) ) ,7) ) ,4,6) ,-7) ) |step(transpose(step(((echo(shuffle(X) ,4,6) +step(X,12) ) |(step(transpose(X,-5) ,12) +transpose(step(step(X,12) ,12) ,7) ) ) ,12) ,-5) ,12) ) ,-7) ) ,7) ) ) +transpose(transpose(((((echo(transpose(step(step(step(echo(step(shuffle(X) ,12) ,4,6) ,12) ,12) ,12) ,-7) ,4,6) +(step((transpose(echo(echo(((step((arpeggio(X) +X) ,12) +transpose(echo(((step((X+transpose(X,12) ) ,12) +transpose((echo(X,4,6) +(X+transpose(X,12) ) ) ,4) ) +transpose(arpeggio(arpeggio(X) ) ,7) ) ,4,6) ,7) ) |transpose(((echo(X,4,6) +transpose(echo((X+transpose(X,12) ) ,4,6) ,7) ) +transpose(arpeggio(X) ,7) ) ,4) ) ,4,6) ,4,6) ,-7) |step(arpeggio((transpose((X|X) ,4) +step(transpose((step(echo(X,4,6) ,12) +transpose(((X+transpose((X+transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) ,7) ) ,-5) ,12) ) ) ,12) ) ,12) |(arpeggio(((transpose(arpeggio((arpeggio(arpeggio(echo(transpose(transpose(X,4) ,-5) ,4,6) ) ) +transpose(((transpose((X|X) ,-5) +transpose(step(echo(step(X,12) ,4,6) ,12) ,12) ) +transpose(echo(step((X|X) ,12) ,4,6) ,12) ) ,7) ) ) ,-5) +transpose(step(((shuffle(shuffle((shuffle(X) +transpose(step(X,12) ,12) ) ) ) |((X+(X+X) ) +transpose((X|X) ,7) ) ) +((transpose(echo(echo(step(shuffle(X) ,12) ,4,6) ,4,6) ,-7) +transpose(step(echo(transpose(step(X,12) ,-7) ,4,6) ,12) ,4) ) +transpose(transpose(shuffle(transpose((X+transpose(X,7) ) ,-7) ) ,-7) ,7) ) ) ,12) ,7) ) +(arpeggio(transpose(((echo(X,4,6) |echo(X,4,6) ) +transpose((arpeggio(X) +arpeggio(X) ) ,12) ) ,-5) ) +shuffle(shuffle(arpeggio(((X+transpose(X,12) ) |shuffle(X) ) ) ) ) ) ) ) |shuffle(((step(step(transpose(X,4) ,12) ,12) +transpose(((((step(step(X,12) ,12) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ) +transpose(arpeggio(transpose(X,-5) ) ,7) ) +transpose(transpose(step(step(arpeggio(arpeggio(X) ) ,12) ,12) ,4) ,12) ) +transpose(step(arpeggio(X) ,12) ,7) ) ,12) ) +transpose(transpose(transpose(transpose(X,-7) ,4) ,4) ,12) ) ) ) ) ) +transpose(shuffle(transpose(step(step(transpose((step(arpeggio(X) ,12) +transpose(X,4) ) ,4) ,12) ,12) ,-5) ) ,4) ) +transpose(shuffle(transpose(step(transpose(transpose(transpose(shuffle(transpose(transpose((shuffle(X) |X) ,4) ,-5) ) ,4) ,4) ,-5) ,12) ,-5) ) ,7) ) |transpose(((arpeggio(arpeggio(shuffle(transpose(arpeggio((((((step(X,12) |transpose(X,-7) ) |echo(echo(X,4,6) ,4,6) ) |transpose(shuffle(X) ,-7) ) |(arpeggio(step(X,12) ) +transpose((X|shuffle(X) ) ,4) ) ) +transpose(((X+((X+X) +transpose(transpose(X,-5) ,12) ) ) +echo(((echo(X,4,6) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,4,6) ) ,12) ) ) ,-7) ) ) ) +transpose((echo(echo(echo(transpose((echo(shuffle(X) ,4,6) +transpose(shuffle((X|X) ) ,7) ) ,-7) ,4,6) ,4,6) ,4,6) |transpose(((step(arpeggio(step(transpose(transpose(X,-5) ,-5) ,12) ) ,12) +transpose(arpeggio(echo(step((arpeggio(X) +step(X,12) ) ,12) ,4,6) ) ,12) ) +transpose((arpeggio(transpose((X|(X+transpose(X,7) ) ) ,-5) ) +transpose(shuffle(transpose(step(echo(transpose(X,-7) ,4,6) ,12) ,-5) ) ,-5) ) ,12) ) ,4) ) ,4) ) +transpose(transpose((transpose(echo(step(shuffle(shuffle(X) ) ,12) ,4,6) ,-7) +transpose(((shuffle(arpeggio(step((step(transpose(X,-5) ,12) +transpose((arpeggio(X) |echo(X,4,6) ) ,12) ) ,12) ) ) +transpose(step(shuffle(arpeggio((((shuffle(X) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) |(X+X) ) ) ) ,12) ,7) ) |arpeggio(transpose(echo((step((arpeggio(X) |X) ,12) +(X+transpose(X,7) ) ) ,4,6) ,4) ) ) ,7) ) ,-7) ,7) ) ,-5) ) ,-5) ,4) ) +transpose(((echo(step(shuffle(arpeggio((((shuffle(shuffle((echo(step(X,12) ,4,6) |shuffle(X) ) ) ) +shuffle(X) ) +transpose(echo(((transpose(echo(echo((echo(X,4,6) |X) ,4,6) ,4,6) ,-5) +transpose(echo(transpose(X,4) ,4,6) ,4) ) +transpose(transpose(step(X,12) ,-7) ,7) ) ,4,6) ,4) ) +transpose(arpeggio(echo((echo(X,4,6) +transpose(transpose(shuffle((X+transpose(X,12) ) ) ,4) ,-7) ) ,4,6) ) ,7) ) ) ) ,12) ,4,6) +transpose(transpose(transpose(((arpeggio(((step((echo(X,4,6) |step(echo(X,4,6) ,12) ) ,12) +transpose(transpose(arpeggio((X+transpose(shuffle(X) ,12) ) ) ,4) ,12) ) +transpose(arpeggio(arpeggio(step(X,12) ) ) ,-5) ) ) +((transpose(arpeggio(echo(arpeggio(echo(transpose(X,4) ,4,6) ) ,4,6) ) ,-5) |step(transpose(echo(shuffle(X) ,4,6) ,-7) ,12) ) |((transpose(arpeggio((step(echo(X,4,6) ,12) +transpose(arpeggio(X) ,12) ) ) ,4) |shuffle(transpose(X,-7) ) ) |transpose(step((X+transpose((X+X) ,12) ) ,12) ,-5) ) ) ) +transpose(shuffle(transpose((transpose(X,-5) +transpose(X,-7) ) ,4) ) ,7) ) ,-7) ,4) ,4) ) +transpose((transpose((shuffle(echo((transpose(((arpeggio(X) |(shuffle(transpose(X,-5) ) +shuffle(X) ) ) |(transpose(transpose(X,4) ,-7) +(step(X,12) +transpose(shuffle(echo(X,4,6) ) ,7) ) ) ) ,4) +transpose(shuffle(arpeggio((echo(transpose(X,-5) ,4,6) +arpeggio(transpose(transpose(transpose(X,-7) ,-7) ,-5) ) ) ) ) ,12) ) ,4,6) ) |shuffle(transpose(transpose(echo(echo(arpeggio(X) ,4,6) ,4,6) ,-5) ,4) ) ) ,-5) +step(arpeggio(step(arpeggio(arpeggio(transpose(shuffle(shuffle((step(X,12) +transpose(arpeggio(X) ,7) ) ) ) ,4) ) ) ,12) ) ,12) ) ,7) ) ,7) )
random seed used was 0

NOTE: Generated phrase was too large ( 7634 ) , it has been truncated at 5000 notes.


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