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:
((transpose((echo(transpose(arpeggio(shuffle(((((step(arpeggio(X) ,12) +transpose(((transpose(X,-5) +transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,4) ) +transpose(transpose(((X+transpose(echo(X,4,6) ,4) ) +transpose(step(X,12) ,7) ) ,-7) ,7) ) +transpose(step(step(echo(X,4,6) ,12) ,12) ,4) ) +transpose((((transpose(((X+X) +transpose(((transpose(X,-7) +transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) +transpose((arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) |transpose(X,4) ) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) +transpose(arpeggio(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ) ,7) ) ,7) ) ) ) ,4) ,4,6) |(((transpose(echo(((((((((X|X) +transpose(((X+X) +X) ,4) ) +transpose(X,7) ) +arpeggio(X) ) +transpose((arpeggio(X) |transpose((X+X) ,-7) ) ,4) ) +transpose(((X+transpose(X,7) ) +(echo(shuffle(X) ,4,6) |step(X,12) ) ) ,7) ) +transpose((((arpeggio(X) |arpeggio(X) ) +shuffle((X+transpose(X,12) ) ) ) |(X+transpose(step(X,12) ,7) ) ) ,4) ) +transpose(step(step(transpose(X,-7) ,12) ,12) ,7) ) ,4,6) ,-5) +transpose(shuffle(step(transpose(step(arpeggio(transpose(arpeggio(((echo(X,4,6) +transpose(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ) ,-7) ) ,12) ,4) ,12) ) ,4) ) +transpose(echo(((((transpose(arpeggio(step(((X+transpose(step(X,12) ,4) ) +transpose(X,7) ) ,12) ) ,-7) +transpose(transpose(arpeggio(((echo(((arpeggio(X) +transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,4,6) +transpose(step(transpose(transpose(X,4) ,-7) ,12) ,-7) ) +(shuffle(((X+transpose(X,12) ) |shuffle(X) ) ) +transpose((transpose(X,-5) +transpose((X+transpose(X,7) ) ,12) ) ,-5) ) ) ) ,-5) ,12) ) +transpose(echo(transpose(((transpose((X+transpose(X,12) ) ,-7) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose(arpeggio(((X+transpose(X,12) ) |transpose(transpose(X,4) ,-5) ) ) ,7) ) ,-5) ,4,6) ,12) ) +transpose(arpeggio(arpeggio(echo(transpose(step((((arpeggio(X) +transpose(step((step(X,12) |(X|X) ) ,12) ,4) ) +transpose(transpose((step(X,12) +shuffle(X) ) ,-7) ,7) ) +transpose(((echo(X,4,6) +X) |echo(arpeggio(X) ,4,6) ) ,-7) ) ,12) ,-5) ,4,6) ) ) ,4) ) +transpose(shuffle(arpeggio(shuffle(shuffle(shuffle(echo(X,4,6) ) ) ) ) ) ,7) ) ,4,6) ,7) ) +transpose(((((step((((echo(X,4,6) +transpose(X,4) ) +transpose(X,7) ) |(shuffle(((shuffle(X) +transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) +(transpose(X,4) +transpose(echo(X,4,6) ,7) ) ) ) ,12) +transpose((((step(((((X+transpose(X,4) ) +transpose(X,7) ) +echo(X,4,6) ) |transpose(((X+(X+X) ) |arpeggio(echo(X,4,6) ) ) ,4) ) ,12) +(transpose(step(arpeggio(X) ,12) ,-5) +(X+X) ) ) |(shuffle(transpose(shuffle(shuffle(transpose(X,-5) ) ) ,-5) ) +shuffle(transpose(X,4) ) ) ) |arpeggio((shuffle((arpeggio(step(X,12) ) +(((((transpose(X,-7) |transpose(X,-7) ) +transpose((transpose(X,-7) |(((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) ) ,4) ) +transpose(step(step(X,12) ,12) ,7) ) +transpose(((((step(arpeggio(X) ,12) +transpose(shuffle(transpose(X,-5) ) ,4) ) +transpose(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X|X) ,7) ) ,7) ) +transpose(((X+X) |(X|X) ) ,4) ) +transpose(step((X|arpeggio(X) ) ,12) ,7) ) ,4) ) +transpose((shuffle((X+transpose(X,7) ) ) +(((echo(X,4,6) +step(X,12) ) +transpose(transpose(transpose(X,-5) ,-5) ,4) ) +transpose(echo(arpeggio(X) ,4,6) ,7) ) ) ,7) ) ) ) |(transpose(((((transpose(shuffle(X) ,-5) +transpose((transpose(X,4) +transpose(X,12) ) ,4) ) +transpose(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-7) ,7) ) +transpose(transpose((arpeggio(echo(X,4,6) ) +transpose((X+X) ,7) ) ,-5) ,4) ) +transpose(transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose(step(X,12) ,-7) ) ,-5) ,7) ) ,4) +shuffle((X+((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ) ) ) ) ) ,4) ) +transpose((transpose(((shuffle((transpose((shuffle(X) |step((X+X) ,12) ) ,4) +transpose((((((shuffle((X+X) ) |((X+transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ) +transpose(step(((X+transpose(X,7) ) +transpose(X,-5) ) ,12) ,4) ) +transpose((X|echo(X,4,6) ) ,7) ) +transpose(transpose((X+(X+transpose(X,7) ) ) ,-7) ,4) ) +transpose(transpose((X+transpose(echo(X,4,6) ,7) ) ,4) ,7) ) ,12) ) ) +transpose(transpose(shuffle(((X+transpose(echo((X+step(X,12) ) ,4,6) ,4) ) +transpose(arpeggio(transpose(X,-7) ) ,7) ) ) ,-5) ,4) ) +transpose(step(transpose(step(echo(transpose(echo((X+X) ,4,6) ,-5) ,4,6) ,12) ,-7) ,12) ,7) ) ,-7) +transpose(step(shuffle(step(transpose(transpose(shuffle(arpeggio(X) ) ,-7) ,4) ,12) ) ,12) ,7) ) ,7) ) +transpose(step((transpose(echo(step(arpeggio(((X+transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) ,12) ,4,6) ,-5) +transpose(shuffle(step(transpose(transpose(X,-7) ,-7) ,12) ) ,12) ) ,12) ,4) ) +transpose(echo((transpose(step(arpeggio(transpose(arpeggio(echo(transpose(X,4) ,4,6) ) ,-7) ) ,12) ,-5) +(shuffle(shuffle(((transpose(X,-7) +transpose(X,4) ) +transpose(step(X,12) ,7) ) ) ) +transpose(step(transpose(((transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) +transpose(((transpose((X+X) ,-7) +transpose((arpeggio(X) |transpose(X,4) ) ,4) ) +transpose((((X+X) +transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,4) ) +transpose((echo(X,4,6) +transpose(transpose((X+X) ,-5) ,7) ) ,7) ) ,-5) ,12) ,7) ) ) ,4,6) ,7) ) ,7) ) ) ,-7) +transpose((((((arpeggio(transpose(step(echo(transpose(echo(X,4,6) ,4) ,4,6) ,12) ,-7) ) +transpose(arpeggio(transpose(echo((((X|X) +transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ,4,6) ,-5) ) ,7) ) |step(((echo(echo(echo(X,4,6) ,4,6) ,4,6) +transpose((echo(((X+((X+transpose(X,4) ) +transpose(X,7) ) ) |step(shuffle(X) ,12) ) ,4,6) +step(arpeggio(((shuffle(X) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ) +transpose(arpeggio(step(X,12) ) ,7) ) ) ,12) ) ,4) ) +transpose(step(transpose(arpeggio(transpose(arpeggio(X) ,-5) ) ,-5) ,12) ,7) ) ,12) ) +step(((step(echo(((transpose(transpose(X,4) ,4) +transpose(echo(arpeggio(X) ,4,6) ,12) ) +transpose((transpose(X,-7) +arpeggio(X) ) ,12) ) ,4,6) ,12) |transpose((shuffle((((X|transpose((X+X) ,4) ) +transpose((transpose((X|X) ,-5) +transpose(X,12) ) ,12) ) +(((step(arpeggio(X) ,12) |step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(transpose(X,-5) ,4) ) +transpose((((arpeggio(X) +transpose(step(X,12) ,4) ) +transpose(arpeggio(X) ,7) ) +transpose(echo(X,4,6) ,-7) ) ,7) ) ) ) +transpose(echo((arpeggio(X) +transpose(step(X,12) ,7) ) ,4,6) ,7) ) ,-7) ) +transpose(transpose(transpose(arpeggio((transpose(transpose(shuffle((X|X) ) ,-7) ,-5) |((transpose(arpeggio(X) ,-5) +transpose(step(echo(X,4,6) ,12) ,4) ) +transpose(step((X+transpose((X+X) ,12) ) ,12) ,7) ) ) ) ,4) ,-5) ,7) ) ,12) ) |transpose(transpose(((step(transpose(arpeggio(step(((arpeggio(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) +transpose((X+transpose((shuffle(X) +transpose(transpose(X,4) ,12) ) ,7) ) ,4) ) +transpose(arpeggio(shuffle(X) ) ,7) ) ,12) ) ,4) ,12) +transpose(transpose((echo(arpeggio(transpose(shuffle(step(X,12) ) ,4) ) ,4,6) |(step(step((arpeggio(X) +transpose(step(X,12) ,12) ) ,12) ,12) +transpose(transpose(shuffle(X) ,-5) ,12) ) ) ,-5) ,4) ) |((transpose(transpose(step(echo((shuffle((X+transpose(X,7) ) ) +transpose((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ,4,6) ,12) ,4) ,-7) +arpeggio(X) ) +transpose(arpeggio(((transpose(arpeggio(X) ,-7) +transpose(shuffle(arpeggio((arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) ) +(X+transpose((shuffle(X) |transpose(X,-5) ) ,12) ) ) ) ) ,4) ) +transpose(arpeggio(echo(((X+transpose((X|X) ,7) ) +transpose(X,7) ) ,4,6) ) ,7) ) ) ,4) ) ) ,-5) ,-7) ) +transpose((arpeggio(arpeggio(echo(transpose(arpeggio(((((transpose(transpose(echo(X,4,6) ,-5) ,4) +transpose(echo(transpose(X,-7) ,4,6) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,-7) ,7) ) |step(shuffle((X+X) ) ,12) ) +transpose(transpose(echo(X,4,6) ,-5) ,12) ) ) ,4) ,4,6) ) ) +transpose(echo(transpose(step((transpose((((transpose(shuffle(step(X,12) ) ,4) +transpose((transpose(echo(X,4,6) ,-7) +transpose(step(transpose(X,4) ,12) ,12) ) ,4) ) +transpose((step(X,12) +transpose(X,12) ) ,7) ) |echo(step((((step(X,12) +transpose(X,4) ) +transpose((X+X) ,7) ) |((X+transpose(X,12) ) +transpose((transpose(X,-5) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,7) ) ) ,12) ,4,6) ) ,-5) |transpose((((((transpose(X,-7) +transpose(((echo(X,4,6) +transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ) +transpose((step(X,12) |shuffle(X) ) ,7) ) +((transpose(X,-7) +transpose(shuffle(X) ,4) ) +transpose(step(arpeggio(transpose(X,4) ) ,12) ,7) ) ) |(echo(shuffle(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X|X) ,4) ) +transpose(shuffle(X) ,7) ) ) ,4,6) +transpose(echo((X+X) ,4,6) ,-5) ) ) ,-7) ) ,12) ,-7) ,4,6) ,7) ) ,12) ) ,4) ) +transpose(transpose(echo((transpose(echo((transpose(((((arpeggio(echo(transpose(X,-5) ,4,6) ) +transpose(echo(arpeggio(((transpose(X,-5) +transpose((X+transpose(X,7) ) ,7) ) +transpose(transpose(shuffle(X) ,4) ,7) ) ) ,4,6) ,4) ) +transpose(((step(X,12) |echo(X,4,6) ) +(shuffle(transpose(X,4) ) +transpose(echo(arpeggio(X) ,4,6) ,4) ) ) ,7) ) +transpose(((echo(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,12) ) +transpose((X|((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,7) ) +(X|transpose(X,4) ) ) ) ,7) ) ,4,6) +transpose(((echo(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4,6) +transpose(arpeggio(arpeggio(arpeggio((X+transpose(X,12) ) ) ) ) ,4) ) +transpose(transpose(shuffle(echo(X,4,6) ) ,-5) ,7) ) ,4) ) +transpose(arpeggio(arpeggio((((X|(X+X) ) +transpose((((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose(shuffle(X) ,7) ) ) ) ,7) ) ,4) ) +transpose(((((arpeggio(X) |((transpose(X,-7) |(X+transpose(X,12) ) ) +transpose((arpeggio(arpeggio(X) ) +((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ,12) ) ) +transpose(shuffle(X) ,4) ) +transpose((step(((X+transpose(arpeggio(X) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) |transpose(((X|X) +(X|X) ) ,-5) ) ,7) ) |transpose(step(transpose((transpose(X,-5) |(X+transpose(X,7) ) ) ,4) ,12) ,4) ) ,7) ) ,-7) +transpose(echo(((((arpeggio((arpeggio(X) +transpose(echo(X,4,6) ,12) ) ) +transpose(((((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) +(X+transpose(X,12) ) ) +transpose((echo(arpeggio(X) ,4,6) +transpose(arpeggio((X+X) ) ,12) ) ,7) ) ,4) ) +transpose(arpeggio(transpose(shuffle(echo(X,4,6) ) ,4) ) ,7) ) +transpose(transpose((shuffle(transpose(X,4) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) ,4) ) +transpose(shuffle(step(arpeggio(transpose(echo(X,4,6) ,-5) ) ,12) ) ,7) ) ,4,6) ,7) ) ,4,6) ,-5) +transpose(arpeggio(shuffle(arpeggio(((((step((X|X) ,12) +transpose(((echo(X,4,6) +transpose(X,4) ) +transpose((transpose(X,-5) +transpose(X,7) ) ,7) ) ,12) ) +(transpose(shuffle(X) ,4) +transpose(step(transpose(X,4) ,12) ,-7) ) ) |echo(transpose(transpose(X,-7) ,-7) ,4,6) ) |transpose((arpeggio(step(arpeggio((((shuffle(X) +transpose(X,7) ) +transpose((X+X) ,4) ) +transpose(transpose(shuffle(X) ,-5) ,7) ) ) ,12) ) +transpose(((shuffle(echo(shuffle(arpeggio(X) ) ,4,6) ) +transpose(arpeggio(step((X|X) ,12) ) ,4) ) +transpose(step(transpose(X,4) ,12) ,7) ) ,-7) ) ,-7) ) ) ) ) ,12) ) ,4,6) ,-7) ,7) )
random seed used was 164175387

NOTE: Generated phrase was too large ( 25412 ) , it has been truncated at 5000 notes. EXPR = (((arpeggio(transpose(transpose(echo((step((shuffle(((echo(transpose(X,4) ,4,6) +transpose(arpeggio(shuffle(shuffle(echo(shuffle(X) ,4,6) ) ) ) ,4) ) +transpose((transpose(transpose(X,4) ,4) +transpose((step(transpose(step((X+X) ,12) ,-5) ,12) |arpeggio(echo(X,4,6) ) ) ,12) ) ,7) ) ) +transpose((transpose(X,-7) +transpose(X,7) ) ,12) ) ,12) |(((step(transpose(step((step(step(X,12) ,12) |transpose(X,-7) ) ,12) ,4) ,12) +transpose(step((step((transpose(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) +transpose((((X|X) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,12) ) ,12) +transpose(transpose(arpeggio((X+transpose(echo(transpose(X,-7) ,4,6) ,12) ) ) ,4) ,12) ) ,12) ,4) ) +transpose(transpose(step(((((echo((X|shuffle(X) ) ,4,6) |arpeggio(transpose(arpeggio(X) ,-5) ) ) |(X|(((X+transpose(X,12) ) +transpose((X+transpose(X,12) ) ,4) ) +transpose((X+X) ,7) ) ) ) +transpose(echo(transpose(X,-7) ,4,6) ,4) ) +transpose(((X+transpose(((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,12) ,-5) ,7) ) |echo(((((echo(X,4,6) +transpose((transpose(X,4) +(step(transpose(X,4) ,12) +transpose((arpeggio(X) +transpose((X+X) ,12) ) ,12) ) ) ,4) ) +transpose(((transpose(X,-7) +transpose(X,-5) ) |step(step(transpose(X,-5) ,12) ,12) ) ,7) ) +transpose((((((transpose(arpeggio(X) ,-5) +transpose(shuffle(X) ,4) ) +transpose(transpose(X,4) ,7) ) +transpose(step(X,12) ,4) ) +transpose(step(step((X|X) ,12) ,12) ,7) ) +shuffle((transpose(X,-5) +transpose(echo(X,4,6) ,7) ) ) ) ,4) ) +transpose(transpose(((step(((arpeggio(X) +transpose(X,12) ) +transpose((((X|X) +transpose((X+X) ,4) ) +transpose(echo(X,4,6) ,7) ) ,12) ) ,12) +transpose((transpose(X,4) |((X+transpose(X,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,4) ) +transpose(echo(shuffle((X+transpose(X,-5) ) ) ,4,6) ,7) ) ,-5) ,7) ) ,4,6) ) ) ,4,6) ,-5) ,4) ) +transpose(arpeggio(step((((((transpose((transpose(step(step(X,12) ,12) ,-7) +echo((transpose(step(X,12) ,4) +transpose(transpose(X,-7) ,12) ) ,4,6) ) ,-7) +transpose(transpose((arpeggio(shuffle(step(((X|X) +(transpose(X,-5) |X) ) ,12) ) ) |transpose(arpeggio(echo(step(X,12) ,4,6) ) ,-7) ) ,-5) ,4) ) +transpose(echo((shuffle((transpose(transpose(arpeggio(X) ,-5) ,-5) |shuffle((echo(X,4,6) +transpose((X+(X|X) ) ,12) ) ) ) ) +transpose(((X+transpose((X+transpose(X,12) ) ,12) ) +arpeggio(transpose(X,-7) ) ) ,7) ) ,4,6) ,7) ) +transpose(echo((transpose(transpose((((arpeggio(X) +transpose(X,-7) ) +transpose(shuffle(X) ,4) ) +transpose(arpeggio(transpose((X|arpeggio(X) ) ,-7) ) ,7) ) ,-7) ,-7) |shuffle(((shuffle(step(((step(X,12) +transpose(transpose(X,-7) ,7) ) +transpose((X|X) ,7) ) ,12) ) +transpose(transpose(transpose(transpose(X,4) ,-7) ,4) ,4) ) +transpose((arpeggio(transpose(step(X,12) ,4) ) |((X+transpose(X,12) ) +transpose(transpose(shuffle(X) ,-7) ,7) ) ) ,7) ) ) ) ,4,6) ,12) ) +transpose((transpose(echo(echo(transpose(((transpose(((X+transpose(transpose(X,4) ,4) ) +transpose(((step(X,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) ,7) ) ,4) +transpose((X+transpose(step(X,12) ,12) ) ,4) ) +transpose(echo(((X+arpeggio(X) ) |transpose(step(X,12) ,-7) ) ,4,6) ,7) ) ,-5) ,4,6) ,4,6) ,-5) +((echo(echo(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,-5) ,4,6) ,4,6) |((shuffle(shuffle(echo(arpeggio(arpeggio(transpose(X,-5) ) ) ,4,6) ) ) +transpose((step((X+X) ,12) +((echo(X,4,6) +transpose(transpose(X,4) ,4) ) +transpose(shuffle(shuffle(step(X,12) ) ) ,7) ) ) ,4) ) +transpose(echo(echo((((shuffle(X) +transpose(arpeggio((X+X) ) ,4) ) +transpose(X,7) ) +transpose(echo(X,4,6) ,7) ) ,4,6) ,4,6) ,7) ) ) +shuffle(step(shuffle((arpeggio(transpose(step(arpeggio(X) ,12) ,-7) ) +transpose(transpose(transpose(shuffle(X) ,-5) ,-7) ,7) ) ) ,12) ) ) ) ,12) ) |transpose((step((echo(step((transpose(arpeggio((X+transpose(X,7) ) ) ,-7) +shuffle(((X+transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ) ) ,12) ,4,6) |(((echo((step(((X+X) |arpeggio(X) ) ,12) |(transpose(X,4) +transpose((X|transpose(X,4) ) ,7) ) ) ,4,6) +step(shuffle(step(X,12) ) ,12) ) +transpose(step(echo(transpose((transpose(X,4) +transpose(((transpose(X,4) +transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ,4,6) ,12) ,4) ) +transpose(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-5) ,7) ) ) ,12) |step(transpose(shuffle(echo(((transpose(shuffle(X) ,-7) +transpose(transpose((transpose(X,-7) |X) ,4) ,4) ) +transpose((step(shuffle(X) ,12) +transpose(((X+transpose(shuffle(step(X,12) ) ,4) ) +transpose(X,7) ) ,7) ) ,7) ) ,4,6) ) ,4) ,12) ) ,-5) ) ,12) ) ,4) ) +transpose(shuffle(echo((transpose((((transpose((((transpose(step(X,12) ,-5) +step(X,12) ) +transpose((((transpose(X,-7) +arpeggio(X) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,4) ) +transpose((arpeggio(transpose(X,-5) ) +transpose((X+transpose((X+transpose(X,-5) ) ,7) ) ,12) ) ,7) ) ,-7) +transpose(transpose((((echo(X,4,6) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose(((transpose((X+transpose(X,7) ) ,-7) +transpose(X,4) ) +transpose(X,7) ) ,7) ) |transpose(transpose((((X+transpose((X+X) ,7) ) +transpose((X+transpose(transpose(X,-5) ,12) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,-5) ,4) ) ,-5) ,4) ) +transpose((echo((shuffle(((step(X,12) +X) +transpose(X,7) ) ) |(((X+echo(X,4,6) ) +transpose(((X+X) +X) ,4) ) +transpose(shuffle((X+X) ) ,7) ) ) ,4,6) +step(shuffle(step(transpose(X,-7) ,12) ) ,12) ) ,7) ) |transpose(((arpeggio(echo((transpose(X,4) |shuffle(transpose(X,-5) ) ) ,4,6) ) +transpose((arpeggio((shuffle((X|(X|X) ) ) +transpose(((X+transpose(X,7) ) +transpose(X,12) ) ,7) ) ) +transpose(shuffle(echo((((arpeggio(X) +transpose((X|X) ,12) ) +transpose(X,4) ) +transpose(X,7) ) ,4,6) ) ,12) ) ,12) ) +step(echo((((X+transpose(X,7) ) +transpose(echo(transpose(X,-7) ,4,6) ,4) ) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,7) ) ,4,6) ,12) ) ,-5) ) ,-5) +arpeggio(echo((shuffle(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +(transpose(arpeggio(((X+transpose(X,4) ) +transpose(step(X,12) ,7) ) ) ,-5) |(((((arpeggio(X) +transpose(arpeggio(echo(X,4,6) ) ,4) ) +transpose(transpose(X,-5) ,7) ) |transpose(((X+transpose(arpeggio(X) ,4) ) +transpose(echo(X,4,6) ,7) ) ,-5) ) +transpose(X,4) ) +transpose((((arpeggio(X) +transpose(X,-7) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,4) ) +transpose((((X+X) |arpeggio(X) ) +transpose(shuffle(step(X,12) ) ,12) ) ,7) ) ,7) ) ) ) ,4,6) ) ) ,4,6) ) ,7) ) +transpose(echo(((arpeggio(((transpose((arpeggio(shuffle(((((arpeggio((transpose(X,-7) |(X+transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose(X,7) ) ,7) ) ) ) +transpose(transpose(transpose(X,-5) ,4) ,4) ) +transpose(arpeggio(((step(X,12) +transpose(transpose(transpose(X,-7) ,4) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ,7) ) +transpose(arpeggio(step(transpose(arpeggio(shuffle(transpose(X,4) ) ) ,-7) ,12) ) ,4) ) +transpose(shuffle(transpose(transpose(step(shuffle(shuffle(X) ) ,12) ,-5) ,-5) ) ,7) ) ) ) +transpose(echo(arpeggio(transpose(X,-5) ) ,4,6) ,7) ) ,-7) +transpose(echo(step(((transpose(echo(arpeggio(X) ,4,6) ,4) +transpose(transpose(arpeggio(X) ,4) ,4) ) +transpose(echo(step(arpeggio((X|(((X+transpose(X,4) ) +transpose(X,7) ) |transpose(X,4) ) ) ) ,12) ,4,6) ,7) ) ,12) ,4,6) ,4) ) +transpose(echo(step(shuffle(arpeggio((((((X+transpose(X,4) ) +transpose(transpose(X,4) ,7) ) +((arpeggio(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(arpeggio(echo(X,4,6) ) ,7) ) ) +transpose(((((((X+transpose(X,4) ) +transpose((X|X) ,7) ) +transpose(X,4) ) +transpose((X+step(X,12) ) ,7) ) +transpose(((shuffle(step(X,12) ) +transpose((X|X) ,4) ) +transpose(shuffle((X|X) ) ,7) ) ,4) ) +transpose(((X|X) |arpeggio((X+X) ) ) ,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ) ,12) ,4,6) ,7) ) ) +transpose(((transpose((transpose(echo((X+X) ,4,6) ,-5) +echo(((X+transpose(transpose(X,-7) ,4) ) +transpose(transpose((X|X) ,4) ,7) ) ,4,6) ) ,-7) +transpose(arpeggio((arpeggio(step(transpose(step(X,12) ,-5) ,12) ) +transpose(transpose((shuffle(X) +arpeggio(X) ) ,-5) ,7) ) ) ,7) ) +(((arpeggio(((arpeggio(arpeggio((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) +transpose(transpose(((arpeggio(arpeggio(X) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4) ) +transpose(step((X|X) ,12) ,7) ) ,-7) ,4) ) +transpose(transpose(step(shuffle(echo(X,4,6) ) ,12) ,4) ,7) ) ) +transpose(((((((X|X) +transpose((((arpeggio(X) +transpose((X|X) ,7) ) +transpose(step(transpose(X,-5) ,12) ,4) ) +transpose(X,7) ) ,4) ) +transpose((shuffle(X) |transpose(X,-7) ) ,7) ) +transpose((arpeggio(X) |((transpose(X,4) +transpose(((transpose(X,-7) +transpose(X,4) ) +transpose((X|X) ,7) ) ,4) ) +transpose(arpeggio(arpeggio(X) ) ,7) ) ) ,4) ) +transpose(shuffle(step(arpeggio(X) ,12) ) ,7) ) +transpose(((transpose((shuffle(X) |shuffle(X) ) ,-7) +transpose(arpeggio(transpose(step(X,12) ,-5) ) ,4) ) +transpose(arpeggio((transpose(transpose(X,4) ,-7) |transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ) ,7) ) ,7) ) ,4) ) +transpose(arpeggio(echo(echo(((transpose(X,-7) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ,4,6) ,4,6) ) ,7) ) +transpose(((step(shuffle(((((X+transpose(step(X,12) ,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) ) ,12) |(((transpose(shuffle(X) ,-7) +transpose(((X+transpose((X+transpose(X,7) ) ,12) ) +transpose(echo(X,4,6) ,7) ) ,4) ) +transpose(((transpose(transpose(shuffle(X) ,-5) ,-7) +transpose(arpeggio(arpeggio(step(X,12) ) ) ,4) ) +transpose(transpose(shuffle((transpose(X,4) +transpose(transpose(X,-5) ,12) ) ) ,-5) ,7) ) ,7) ) +transpose(echo(transpose(shuffle(arpeggio(X) ) ,-7) ,4,6) ,12) ) ) +transpose(transpose(step(step(echo(echo(X,4,6) ,4,6) ,12) ,12) ,-5) ,7) ) ,12) ) ) ,4) ) +transpose(shuffle(step(transpose(((((step(echo(((((transpose((X|X) ,-7) +transpose((step(X,12) +transpose((X+transpose(X,12) ) ,12) ) ,4) ) +transpose(((X+transpose(X,12) ) |X) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-7) ,-7) ) ,7) ) ,4,6) ,12) +transpose((echo(echo(arpeggio(X) ,4,6) ,4,6) +transpose((transpose(transpose(shuffle(X) ,-5) ,-5) +transpose(transpose(((X+transpose((X|X) ,7) ) +arpeggio(X) ) ,-5) ,12) ) ,12) ) ,4) ) +transpose(transpose(((shuffle(step(X,12) ) |(X+transpose(echo(X,4,6) ,12) ) ) +(step((X|echo(X,4,6) ) ,12) |transpose(X,4) ) ) ,-5) ,7) ) +transpose(arpeggio(shuffle(transpose(transpose(arpeggio(X) ,-5) ,4) ) ) ,4) ) +transpose(((echo(transpose(((transpose(step(X,12) ,-7) +transpose(shuffle(echo(step(X,12) ,4,6) ) ,4) ) +transpose(shuffle((((X+transpose(X,12) ) +transpose(arpeggio(X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) ,7) ) ,4) ,4,6) +transpose(arpeggio(((X+transpose(echo((X|X) ,4,6) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,12) ) +transpose((shuffle(transpose(step(transpose(X,-7) ,12) ,4) ) +transpose(transpose(transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,-5) ,-7) ,12) ) ,7) ) ,7) ) ,-7) ,12) ) ,7) ) ,4,6) ,12) )
random seed used was 0

NOTE: Generated phrase was too large ( 16584 ) , it has been truncated at 5000 notes.


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