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:
(echo((transpose((((arpeggio(transpose((transpose((((X|(X+X) ) |transpose(echo(X,4,6) ,-7) ) +transpose(transpose(X,-5) ,12) ) ,4) |echo((arpeggio(transpose((echo(X,4,6) +(X+X) ) ,-7) ) +transpose(step(echo((X+X) ,4,6) ,12) ,-5) ) ,4,6) ) ,-7) ) +arpeggio((arpeggio(((((((X+X) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X|X) ,7) ) +transpose(step(X,12) ,4) ) +transpose(transpose((X|(X|X) ) ,-5) ,7) ) |transpose((X+transpose(shuffle(transpose(X,-5) ) ,12) ) ,-5) ) ) +echo(step((X|transpose((X+X) ,-7) ) ,12) ,4,6) ) ) ) +transpose(step(transpose((transpose(((arpeggio(transpose((X+X) ,-7) ) |transpose(step(transpose(step(shuffle(transpose(X,-5) ) ,12) ,-5) ,12) ,-5) ) |((transpose(transpose(transpose(X,-5) ,4) ,-5) +transpose(shuffle((((X+transpose(X,12) ) +transpose(((X|X) |X) ,12) ) |arpeggio(echo(shuffle(X) ,4,6) ) ) ) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ) ,-5) |(transpose((transpose((transpose((echo(X,4,6) |transpose(X,-7) ) ,-5) |transpose(shuffle(transpose(X,-7) ) ,-7) ) ,-7) +((transpose(((X+transpose(X,7) ) +X) ,-5) |((X|X) |(transpose(X,-5) |(X+transpose(X,12) ) ) ) ) +shuffle(((X+X) +X) ) ) ) ,-7) +step((echo(X,4,6) +transpose(transpose(((X+transpose(X,7) ) +X) ,-5) ,12) ) ,12) ) ) ,4) ,12) ,4) ) +transpose(transpose(transpose(step((transpose(transpose(shuffle(step(X,12) ) ,-7) ,-7) |transpose((transpose((arpeggio(X) +transpose(arpeggio(X) ,7) ) ,4) +arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,-7) ) ,12) ,4) ,-7) ,7) ) ,-5) +(arpeggio(shuffle(transpose(step(((transpose(((X+transpose(X,7) ) +transpose(X,12) ) ,4) +transpose(((X+transpose(X,4) ) +transpose((X|X) ,7) ) ,4) ) +transpose((X+(X+X) ) ,7) ) ,12) ,-5) ) ) |(step(shuffle((echo(X,4,6) +transpose(X,-5) ) ) ,12) +transpose(transpose(transpose(X,4) ,-7) ,7) ) ) ) ,4,6) |(transpose(echo(step((transpose((echo((step(transpose(step(step(X,12) ,12) ,4) ,12) +step(transpose((X|X) ,-7) ,12) ) ,4,6) +transpose(arpeggio((((step(X,12) |echo((X|X) ,4,6) ) +transpose((X+transpose(echo((X+transpose(X,12) ) ,4,6) ,4) ) ,4) ) +transpose(((X+X) +X) ,7) ) ) ,7) ) ,4) +transpose((arpeggio(transpose(transpose(((transpose(shuffle(X) ,4) |step(X,12) ) +transpose((shuffle(X) +arpeggio(X) ) ,12) ) ,4) ,-7) ) +((shuffle((step(transpose(X,-7) ,12) |X) ) +transpose(transpose(transpose(transpose(arpeggio(X) ,4) ,4) ,4) ,7) ) +transpose((transpose(step(transpose(X,4) ,12) ,-5) +step((X|echo(X,4,6) ) ,12) ) ,7) ) ) ,7) ) ,12) ,4,6) ,4) |transpose((((((((((transpose((transpose(step(X,12) ,-7) +transpose(((X+transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) ,7) ) ,-7) |transpose(X,-5) ) +transpose(transpose((transpose((X+((X+transpose(X,4) ) +transpose(X,7) ) ) ,-7) +transpose(transpose(transpose(X,4) ,4) ,7) ) ,-7) ,12) ) +(shuffle(((X+transpose(X,7) ) +transpose(transpose(step(X,12) ,4) ,12) ) ) +transpose((X|(X|X) ) ,-5) ) ) +transpose((arpeggio(echo(transpose(arpeggio(transpose(X,-7) ) ,4) ,4,6) ) +transpose((echo(transpose(step(X,12) ,-7) ,4,6) |(echo(step(X,12) ,4,6) +step((X|X) ,12) ) ) ,12) ) ,4) ) +transpose(((echo(((((X|X) +transpose(X,12) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,7) ) +transpose(transpose(transpose((X+X) ,4) ,-7) ,7) ) ,4,6) +transpose((((shuffle((((X+transpose(X,4) ) +transpose(X,7) ) |echo(X,4,6) ) ) +transpose((transpose(X,-7) +transpose((X+transpose(transpose(X,4) ,7) ) ,12) ) ,12) ) +(((X+transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,7) ) ) |((transpose(transpose((X+transpose(X,7) ) ,-7) ,4) |(X+transpose(X,4) ) ) +((X|X) +transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,12) ) ) ) ,4) ) +transpose(((transpose(transpose(echo(X,4,6) ,4) ,-5) +transpose(transpose((transpose(transpose(X,-5) ,-7) +transpose(((arpeggio(X) +transpose((X+X) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,7) ) ,-5) ,4) ) +transpose((transpose(X,4) +transpose(step(X,12) ,12) ) ,7) ) ,7) ) ,7) ) +transpose(step((transpose((arpeggio(transpose((shuffle(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(arpeggio(transpose((X+transpose((X+transpose(X,7) ) ,-5) ) ,-5) ) ,12) ) ,4) +(step(((((transpose(arpeggio(X) ,4) +transpose(transpose(step(transpose((X+X) ,-5) ,12) ,4) ,4) ) +transpose(shuffle(((X+transpose(X,7) ) |transpose(X,-7) ) ) ,7) ) +transpose((((X+transpose(X,7) ) +(X+X) ) |transpose(echo(arpeggio((X+X) ) ,4,6) ,4) ) ,4) ) +transpose(transpose(echo(((step(X,12) +transpose((X+X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,4,6) ,4) ,7) ) ,12) +shuffle(arpeggio(transpose(X,-7) ) ) ) ) ,12) ,7) ) +transpose(shuffle(((shuffle(transpose((X|transpose((X+transpose(X,7) ) ,-5) ) ,4) ) +transpose(((((transpose(transpose(X,-5) ,4) +transpose(step(X,12) ,4) ) +transpose(transpose(step(X,12) ,-5) ,7) ) +transpose(echo(((X+transpose((X+X) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,4,6) ,7) ) |(((X+transpose(X,7) ) +transpose((X+transpose(X,7) ) ,12) ) +(((X+transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) +transpose(shuffle(X) ,-5) ) ) ) ,12) ) +transpose(transpose(((transpose((echo(X,4,6) +transpose(((X+X) +transpose(X,12) ) ,12) ) ,4) +transpose((arpeggio(X) +transpose((transpose(step(X,12) ,-7) +(X+(X+transpose(X,12) ) ) ) ,7) ) ,12) ) |(transpose((transpose(X,4) +transpose((shuffle(X) +(X+X) ) ,7) ) ,-5) +step(transpose(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-5) ,4) ,12) ) ) ,-7) ,12) ) ) ,7) ) |(transpose((arpeggio((arpeggio(((arpeggio(X) |step(X,12) ) +transpose(arpeggio(X) ,12) ) ) |transpose(transpose((((transpose(X,-5) +transpose((X|X) ,4) ) +transpose(transpose(X,-5) ,7) ) +transpose(transpose(arpeggio(X) ,-7) ,12) ) ,-5) ,-5) ) ) +transpose(transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +transpose(echo(X,4,6) ,12) ) ,-5) ,7) ) ,-5) +step(((transpose(((X+transpose((X+X) ,7) ) +X) ,-5) +transpose(echo((transpose((((X+X) +transpose(((((X+X) +(X+transpose(X,12) ) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,12) ) +transpose(step(echo(shuffle(X) ,4,6) ,12) ,12) ) ,4) ) +transpose(transpose(echo(transpose(X,-5) ,4,6) ,4) ,7) ) ,-7) |((X|X) |(((((X|(X|X) ) +transpose((shuffle(X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(shuffle((X+transpose((X+transpose(X,7) ) ,12) ) ) ,7) ) +transpose(transpose(shuffle((X+transpose(X,12) ) ) ,-5) ,4) ) +transpose(((echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) +transpose((X+transpose(X,7) ) ,4) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) ,7) ) ) ) ,4,6) ,7) ) |(echo(step((transpose((X|X) ,-5) +transpose(transpose(X,-7) ,12) ) ,12) ,4,6) +shuffle(((((shuffle(arpeggio(X) ) +transpose(X,4) ) +transpose((X+X) ,7) ) +echo((((X+transpose(X,12) ) +(X+X) ) +transpose(X,12) ) ,4,6) ) +transpose((step(transpose(transpose(echo(X,4,6) ,-7) ,-5) ,12) +transpose((transpose(echo(X,4,6) ,-7) +transpose(transpose(transpose(X,-5) ,-7) ,12) ) ,-5) ) ,12) ) ) ) ) ,12) ) ) +transpose((((((((transpose((transpose(X,-5) +transpose(shuffle(X) ,12) ) ,4) |arpeggio((X+X) ) ) |echo(transpose(transpose(step(X,12) ,-5) ,-7) ,4,6) ) +transpose((shuffle((transpose((X+X) ,-7) +(transpose(X,-5) |(X+X) ) ) ) +arpeggio((transpose((X+transpose(X,12) ) ,-7) +transpose(transpose((X|X) ,-5) ,7) ) ) ) ,-5) ) |((transpose(transpose(arpeggio(X) ,-5) ,4) |echo(echo((arpeggio(X) |arpeggio(X) ) ,4,6) ,4,6) ) |arpeggio(transpose(((arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +X) ) |(transpose(X,-7) +transpose(X,12) ) ) +transpose(transpose(transpose(transpose(X,-5) ,-5) ,-7) ,7) ) ,4) ) ) ) +transpose((echo(((step((((arpeggio(X) +transpose(X,12) ) |transpose(shuffle(transpose(X,4) ) ,-5) ) +transpose(transpose(((transpose(transpose(X,-7) ,-5) +transpose(X,4) ) +transpose(shuffle(transpose(X,-7) ) ,7) ) ,4) ,7) ) ,12) +(((transpose(shuffle(arpeggio(X) ) ,4) +transpose(transpose((X|transpose(X,-7) ) ,-7) ,12) ) |arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) |((transpose(X,-7) |((X+X) |shuffle(X) ) ) +((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,7) ) |X) ) ) ) +transpose((arpeggio((step(transpose(X,4) ,12) |transpose((X|X) ,-7) ) ) |transpose((arpeggio(X) +step((transpose(X,4) +transpose(X,7) ) ,12) ) ,4) ) ,7) ) ,4,6) +(arpeggio(step((X+transpose(X,12) ) ,12) ) +(((((transpose(X,4) +transpose(X,12) ) |transpose(transpose(X,4) ,-7) ) +transpose((echo(X,4,6) +X) ,12) ) +transpose(((((X|X) +transpose((X|X) ,12) ) +((X+transpose(X,12) ) +transpose(shuffle(X) ,12) ) ) |transpose((X|X) ,-7) ) ,4) ) +transpose(transpose(X,4) ,7) ) ) ) ,4) ) +transpose((shuffle(echo(transpose(step(echo((((X+transpose(X,4) ) +transpose(X,7) ) |(X+X) ) ,4,6) ,12) ,4) ,4,6) ) +((transpose(arpeggio(shuffle(shuffle(((transpose(X,-7) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X|X) ,7) ) ) ) ) ,-7) +transpose((echo(transpose(((X+X) +((X+X) +(X+X) ) ) ,4) ,4,6) |shuffle(transpose(transpose(X,4) ,-5) ) ) ,4) ) +transpose((((((echo(arpeggio(transpose((X+X) ,-5) ) ,4,6) +transpose(transpose((X+X) ,4) ,4) ) +transpose(((X+transpose(X,7) ) +X) ,7) ) +(shuffle(X) +((X+X) +(X+step(X,12) ) ) ) ) +arpeggio((transpose((arpeggio(X) +shuffle(X) ) ,-5) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +X) +arpeggio(transpose(X,4) ) ) ,12) ) ) ) |(transpose(echo(X,4,6) ,-7) |transpose(transpose(((X+((X+transpose(X,4) ) +transpose(X,7) ) ) |transpose(X,-7) ) ,-5) ,-5) ) ) ,7) ) ) ,7) ) +transpose(shuffle(transpose(transpose((((shuffle((X+(transpose(X,-7) +arpeggio(X) ) ) ) +transpose(transpose(echo(((X|X) +X) ,4,6) ,-7) ,4) ) +transpose((((X|X) +transpose(X,12) ) +echo(X,4,6) ) ,7) ) +transpose(shuffle((transpose(X,4) +transpose((X|X) ,7) ) ) ,12) ) ,4) ,4) ) ,7) ) ,12) ) ,-5) ) )
random seed used was 197549766

NOTE: Generated phrase was too large ( 9148 ) , it has been truncated at 5000 notes. EXPR = (transpose(((arpeggio(arpeggio((step(step((((transpose(transpose((X|X) ,4) ,4) +X) +transpose(transpose(transpose(X,-5) ,4) ,12) ) |echo(((transpose(transpose((X+X) ,-7) ,-7) +transpose(X,4) ) +transpose(shuffle(transpose(X,-7) ) ,7) ) ,4,6) ) ,12) ,12) |(transpose(transpose(transpose(arpeggio((transpose(((X+transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,-5) +transpose(((X+transpose(transpose(X,-7) ,7) ) +transpose((X+transpose(X,7) ) ,7) ) ,7) ) ) ,-7) ,-5) ,-5) +transpose((step(((shuffle(X) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,12) |((step(echo(shuffle(arpeggio(X) ) ,4,6) ,12) +transpose(transpose(transpose(X,-5) ,4) ,-5) ) +transpose(((((X+X) +transpose(X,12) ) |X) |echo(((transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) ,4,6) ) ,-5) ) ) ,12) ) ) ) ) +(transpose(shuffle((step(transpose(shuffle(X) ,4) ,12) +(transpose(transpose(step((((shuffle(X) +transpose(((X+transpose((X+X) ,4) ) +transpose(transpose(X,-7) ,7) ) ,4) ) +transpose(((X+transpose(X,12) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) |(((X+transpose(X,12) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4) ) +transpose(transpose(transpose(X,4) ,-7) ,7) ) ) ,12) ,4) ,-5) |step(transpose(X,-5) ,12) ) ) ) ,-7) |shuffle(transpose(step(echo((((X+(X+X) ) +transpose(X,12) ) +transpose(transpose((((X+X) +transpose(transpose(X,4) ,7) ) +transpose(echo(X,4,6) ,7) ) ,4) ,12) ) ,4,6) ,12) ,-5) ) ) ) +transpose((transpose((((echo(echo(X,4,6) ,4,6) +transpose(transpose(transpose((arpeggio(X) +(X|X) ) ,-5) ,4) ,12) ) +(((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) |echo(transpose(X,-5) ,4,6) ) +transpose((step(echo(X,4,6) ,12) +(X+transpose(step(X,12) ,12) ) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +step((transpose((X+transpose(X,7) ) ,4) +(transpose((X+X) ,-5) +echo((transpose(X,4) +transpose(echo(X,4,6) ,7) ) ,4,6) ) ) ,12) ) ) +transpose(transpose((((arpeggio(X) +transpose(transpose(X,-5) ,12) ) +transpose(transpose(X,4) ,12) ) |transpose(((shuffle(X) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,4) ) +transpose(shuffle(X) ,7) ) ,4) ) +transpose(step((X|X) ,12) ,7) ) ,4) ) ,-7) ,12) ) ,-7) +transpose(step(((transpose(step((shuffle((transpose((X+X) ,-5) +transpose(transpose(X,-7) ,12) ) ) +transpose(((transpose(X,-7) |X) +shuffle((X+X) ) ) ,7) ) ,12) ,-5) +transpose(shuffle(((X+X) +transpose((X+transpose(X,12) ) ,12) ) ) ,7) ) +transpose(shuffle(shuffle((transpose((step(X,12) +transpose(step(transpose(X,-5) ,12) ,12) ) ,-7) |((transpose(echo(X,4,6) ,4) +transpose(X,4) ) +transpose((X+X) ,7) ) ) ) ) ,12) ) ,12) ,12) ) ,-5) ) ,4) +(((transpose((transpose(transpose(echo(arpeggio(step((X+transpose((X+transpose(X,12) ) ,7) ) ,12) ) ,4,6) ,-5) ,4) +(echo(transpose((((step(X,12) +(X+transpose(shuffle(X) ,7) ) ) +step(X,12) ) |transpose(((X+transpose(echo(X,4,6) ,7) ) +transpose(shuffle((X|X) ) ,7) ) ,4) ) ,4) ,4,6) +transpose(echo((step((transpose(transpose(X,-7) ,-5) +(X|X) ) ,12) +transpose((shuffle(X) |((X+X) +transpose(X,12) ) ) ,7) ) ,4,6) ,12) ) ) ,-5) +transpose(transpose(transpose(transpose((transpose(transpose(transpose((X+transpose(X,7) ) ,4) ,4) ,4) +transpose((((step(((X+X) +transpose(((X+transpose(X,7) ) +X) ,12) ) ,12) |step((X+X) ,12) ) +transpose(((step(((transpose((X+transpose(X,12) ) ,4) +transpose(((X|X) +transpose((X+X) ,7) ) ,4) ) +transpose(echo((X|X) ,4,6) ,7) ) ,12) +(X+X) ) |((step(shuffle((X+transpose(X,7) ) ) ,12) +transpose(transpose(step(X,12) ,4) ,4) ) +transpose((X|X) ,7) ) ) ,7) ) +transpose(((((shuffle((X|X) ) +((X+X) |X) ) +transpose(((X+X) +transpose(arpeggio(X) ,-5) ) ,7) ) +transpose(((((X+transpose(step(X,12) ,7) ) +transpose(X,-7) ) +transpose(arpeggio(arpeggio(((X+transpose(X,12) ) |(X|X) ) ) ) ,4) ) +transpose(transpose((X+X) ,4) ,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,-7) ) ,7) ) ,-7) ,4) ,-5) ,12) ) +transpose(transpose((echo((((echo(transpose(transpose((((X+transpose(X,4) ) +transpose(X,7) ) |((X+X) +transpose((transpose(transpose(X,-7) ,4) |X) ,7) ) ) ,4) ,-7) ,4,6) +echo(transpose(echo((((transpose(X,4) +shuffle(X) ) +transpose(((X+transpose(X,12) ) +transpose(transpose(X,-7) ,7) ) ,4) ) +transpose(((transpose((X+X) ,-7) +transpose(transpose(X,-5) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,7) ) ,4,6) ,4) ,4,6) ) +transpose(((transpose(((transpose(transpose(X,-7) ,-7) +transpose((echo(X,4,6) |transpose(transpose(X,-5) ,-7) ) ,12) ) |step(shuffle(X) ,12) ) ,-7) +(shuffle(arpeggio(step((X+X) ,12) ) ) +(((transpose(X,-5) +transpose(transpose(X,4) ,4) ) +transpose(X,7) ) |(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) |((X+transpose(X,7) ) +X) ) ) ) ) +transpose(shuffle(transpose(echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) ,4) ) ,-5) ) ,4) ) +transpose(transpose(transpose((step(shuffle(((X|X) +(X+transpose(X,7) ) ) ) ,12) +((arpeggio(transpose(X,-7) ) +transpose((X+X) ,4) ) +transpose(((X+transpose(X,12) ) +transpose(X,7) ) ,7) ) ) ,-5) ,4) ,7) ) ,4,6) +transpose(transpose(((transpose(transpose(X,-5) ,-7) |(X+transpose(X,-7) ) ) |((((transpose(X,-7) +X) |((X|shuffle(X) ) +transpose((echo(X,4,6) +(X+transpose(X,7) ) ) ,12) ) ) +transpose(transpose(((((X+transpose(X,7) ) +transpose(transpose(X,-5) ,-5) ) +transpose(transpose((((X|X) +transpose(transpose((X+transpose(X,7) ) ,4) ,4) ) +transpose((X+X) ,7) ) ,4) ,7) ) +echo((X|X) ,4,6) ) ,4) ,4) ) +transpose((((transpose(transpose(transpose(X,4) ,-5) ,-5) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) +(transpose(transpose(X,-5) ,-5) |(X+X) ) ) ,4) ) +transpose(((X+transpose(X,-7) ) +transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose((transpose(X,4) +transpose(X,-5) ) ,12) ) ,7) ) ,7) ) +transpose(transpose(transpose(transpose((X+transpose(X,12) ) ,4) ,4) ,4) ,12) ) ,7) ) ) ,-5) ,12) ) ,-5) ,7) ) |(echo(transpose(step((((((((shuffle(X) |((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ) +transpose((X+transpose(transpose(X,-7) ,12) ) ,12) ) +transpose((transpose(X,-7) +((arpeggio(X) +transpose(transpose(X,-7) ,12) ) +transpose(step(X,12) ,12) ) ) ,12) ) +(X+(shuffle(transpose(X,-5) ) +(transpose(X,-5) +transpose(X,7) ) ) ) ) |(arpeggio((((echo(X,4,6) |transpose((X|X) ,-7) ) |(X+transpose(((X+transpose(X,12) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ) +((X|transpose(X,-7) ) +transpose((((transpose(X,-5) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,-7) ,7) ) |X) ,12) ) ) ) |(transpose(transpose(((X+X) |shuffle(transpose(X,-5) ) ) ,-7) ,4) |(transpose(arpeggio((X+transpose(X,12) ) ) ,-5) |(echo(X,4,6) +transpose(((X+transpose(X,12) ) +echo(X,4,6) ) ,7) ) ) ) ) ) +transpose((((step(X,12) |(X+X) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |X) ,4) ) +transpose(step(transpose((shuffle((X+transpose(X,12) ) ) +transpose((transpose(X,4) |echo(X,4,6) ) ,12) ) ,-7) ,12) ,7) ) ,4) ) +transpose(transpose((transpose(((X+X) +transpose(X,12) ) ,-5) +arpeggio(transpose(X,-5) ) ) ,-7) ,7) ) ,12) ,4) ,4,6) +transpose((transpose(shuffle(((((transpose(transpose((shuffle((((X+transpose(X,4) ) +transpose(X,7) ) +X) ) |X) ,4) ,4) +transpose(transpose(shuffle(transpose(X,-7) ) ,-7) ,4) ) +((transpose((echo((((X+transpose(arpeggio(X) ,7) ) +transpose(((X+transpose(X,7) ) +transpose((X+X) ,12) ) ,4) ) +transpose((transpose(X,-7) +(X+X) ) ,7) ) ,4,6) +transpose(((X+(X+X) ) |transpose((X+transpose(X,12) ) ,4) ) ,12) ) ,4) +transpose(transpose((arpeggio((transpose(X,4) +transpose(echo(X,4,6) ,12) ) ) +transpose(X,-7) ) ,4) ,4) ) +transpose((((X+(X|X) ) +transpose(arpeggio(X) ,-5) ) +transpose((transpose(X,4) |shuffle(transpose(X,4) ) ) ,12) ) ,7) ) ) +arpeggio((((((((X+transpose(X,7) ) +transpose((X+X) ,4) ) +transpose((X+X) ,7) ) +transpose(transpose(X,-5) ,7) ) +arpeggio(X) ) |(transpose(shuffle(X) ,-7) +(shuffle(X) |X) ) ) +transpose(shuffle((X+X) ) ,-7) ) ) ) |step(shuffle(((transpose(arpeggio(X) ,-7) +echo((X+transpose(X,7) ) ,4,6) ) +transpose((echo((transpose(transpose(X,-7) ,-5) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio(shuffle(X) ) ,7) ) ,12) ) ,4,6) +shuffle((((X+transpose(X,12) ) +(X+transpose(X,7) ) ) +(X|X) ) ) ) ,7) ) ) ,12) ) ) ,-7) +step(transpose((step(transpose(step((transpose((X+X) ,-7) |(shuffle(X) +transpose(arpeggio(X) ,7) ) ) ,12) ,-5) ,12) +transpose((((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(shuffle(transpose(step(X,12) ,-5) ) ,12) ) ,12) ) ,-7) ,12) ) ,12) ) ) )
random seed used was 0

NOTE: Generated phrase was too large ( 10460 ) , it has been truncated at 5000 notes. EXPR = step(shuffle(echo(step((transpose(transpose(((((transpose(step(arpeggio(X) ,12) ,-7) +transpose((((X|X) +transpose(echo(X,4,6) ,12) ) |(((X+transpose(arpeggio(X) ,4) ) +transpose(X,7) ) +transpose((transpose(X,-7) +(X+transpose(X,7) ) ) ,7) ) ) ,7) ) +transpose(arpeggio((echo(X,4,6) +shuffle((X|transpose(X,-7) ) ) ) ) ,4) ) +transpose(transpose(((transpose(transpose(X,4) ,-5) +(X+X) ) +transpose(transpose(transpose(shuffle(X) ,-7) ,-5) ,12) ) ,-5) ,7) ) +transpose((((X+shuffle(transpose((X+transpose(transpose(X,4) ,7) ) ,-5) ) ) +transpose(shuffle(transpose(transpose((X+X) ,4) ,-5) ) ,12) ) +((echo(X,4,6) +(transpose(X,-7) +transpose(shuffle(X) ,7) ) ) +transpose(transpose(transpose(X,4) ,-5) ,7) ) ) ,12) ) ,-5) ,-5) |(echo((((((shuffle(X) +(X+transpose(X,7) ) ) |shuffle(X) ) +shuffle(transpose(echo(X,4,6) ,-7) ) ) +transpose(step(arpeggio((X+transpose(arpeggio(X) ,7) ) ) ,12) ,4) ) +transpose(((X+transpose(X,12) ) |X) ,7) ) ,4,6) +shuffle((step(((X+transpose(X,7) ) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,12) ) ,12) +(((transpose(step(X,12) ,-5) +transpose(((X+transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose((transpose(X,-5) +arpeggio(X) ) ,-7) ,7) ) +transpose((((X+transpose(step(X,12) ,4) ) +transpose(arpeggio(X) ,7) ) +transpose((X|X) ,7) ) ,-7) ) ) ) ) ) ,12) ,4,6) ) ,12)
random seed used was 0 EXPR = arpeggio(transpose((transpose(echo(transpose((transpose((transpose(shuffle(echo(step(step(((transpose(X,-5) +transpose(transpose(X,-5) ,4) ) +transpose(transpose(X,4) ,7) ) ,12) ,12) ,4,6) ) ,-5) +transpose(transpose(transpose(transpose(transpose((transpose(shuffle(transpose(X,-5) ) ,4) +(transpose(X,4) +transpose(arpeggio(transpose(X,-5) ) ,7) ) ) ,-5) ,4) ,-7) ,-7) ,7) ) ,-5) +transpose(transpose(transpose(transpose(step((X+X) ,12) ,4) ,4) ,4) ,12) ) ,-7) ,4,6) ,-5) |(((((arpeggio((((transpose(arpeggio(X) ,4) |(X+X) ) +(X|X) ) +(transpose((X|X) ,4) +((X+transpose(X,7) ) +transpose(X,7) ) ) ) ) +transpose(((((X|X) |X) |transpose(echo(transpose(X,-5) ,4,6) ,-7) ) +transpose(transpose((transpose(transpose((shuffle(X) +X) ,-5) ,-7) +transpose(((X+transpose((X+transpose(X,7) ) ,12) ) +transpose(((X+X) +transpose((X+transpose(X,12) ) ,12) ) ,7) ) ,7) ) ,-5) ,7) ) ,12) ) |transpose((((((((X+X) +transpose((X+transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) +transpose(transpose(step(transpose(X,-5) ,12) ,-5) ,12) ) |step((((shuffle(X) |X) +transpose((transpose(X,4) +arpeggio(X) ) ,4) ) +transpose(X,7) ) ,12) ) +transpose(transpose((((echo((X+shuffle(X) ) ,4,6) +transpose(((echo(X,4,6) |arpeggio(X) ) +transpose(transpose(step(X,12) ,4) ,7) ) ,12) ) +transpose(echo(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4,6) ,4) ) +transpose(((X|(((X+transpose(X,12) ) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) ) +transpose((transpose((X+transpose(X,12) ) ,-5) +transpose(transpose((X|X) ,-5) ,7) ) ,12) ) ,7) ) ,4) ,4) ) +transpose(((transpose(echo(X,4,6) ,-5) +transpose(echo(echo((transpose(X,4) +transpose(X,7) ) ,4,6) ,4,6) ,12) ) +transpose(((transpose(transpose(X,4) ,4) +transpose(transpose(step((arpeggio(X) +shuffle(X) ) ,12) ,-5) ,4) ) +transpose(transpose((X|X) ,-7) ,7) ) ,-5) ) ,7) ) ,-7) ) |shuffle((transpose(arpeggio(transpose((transpose(X,4) +X) ,-7) ) ,4) +transpose(transpose((step((shuffle((X+transpose(X,7) ) ) |X) ,12) +echo((X+transpose(transpose((shuffle((X+X) ) |((X+transpose(X,12) ) |echo(X,4,6) ) ) ,4) ,12) ) ,4,6) ) ,4) ,12) ) ) ) |(transpose(transpose(transpose(transpose(((echo((((echo(X,4,6) +transpose(((X+transpose(X,12) ) +transpose(echo(X,4,6) ,7) ) ,12) ) |transpose(transpose(X,4) ,4) ) +arpeggio((echo(X,4,6) +transpose(transpose(X,4) ,12) ) ) ) ,4,6) +transpose(transpose((((X+transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) +((X+transpose(X,7) ) +transpose((X+transpose(X,12) ) ,12) ) ) ,-5) ,4) ) +transpose(transpose(((transpose(arpeggio(X) ,-7) +arpeggio(transpose(((X|X) +transpose((X+transpose(X,7) ) ,12) ) ,-5) ) ) +transpose(X,12) ) ,-7) ,7) ) ,-5) ,4) ,-7) ,4) +((((transpose(arpeggio((X+transpose(X,12) ) ) ,4) |(step((((transpose((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) +(X|X) ) +transpose(transpose(transpose((X+X) ,-5) ,4) ,12) ) +transpose(shuffle(echo((((X+transpose(X,7) ) +transpose((X|X) ,12) ) |shuffle(X) ) ,4,6) ) ,7) ) ,12) |(((((X|X) +transpose(X,-7) ) +X) +transpose(((transpose((X+X) ,-5) |transpose(X,-7) ) +transpose(echo((X+transpose(transpose(X,-7) ,7) ) ,4,6) ,12) ) ,7) ) +transpose((transpose(X,4) +transpose(((((step(X,12) +transpose((X|X) ,12) ) +((X|X) +X) ) |step(X,12) ) |((X+transpose((X+transpose(transpose(X,-5) ,12) ) ,4) ) +transpose(((X+X) +transpose((X|X) ,12) ) ,7) ) ) ,12) ) ,7) ) ) ) +transpose(((transpose((echo(step(X,12) ,4,6) +transpose(step(X,12) ,7) ) ,-7) +transpose((arpeggio((transpose(X,4) |transpose(X,-5) ) ) +((X+X) +transpose((arpeggio(X) +transpose(X,7) ) ,7) ) ) ,4) ) +transpose(((transpose(X,4) +transpose(X,-7) ) +transpose(transpose(step((X|X) ,12) ,-7) ,12) ) ,7) ) ,-5) ) +transpose(transpose(echo(step((transpose(transpose((X|X) ,4) ,4) |((echo(X,4,6) +transpose(((shuffle(X) +transpose(transpose(X,-5) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ,7) ) +transpose(transpose(step(arpeggio(X) ,12) ,-7) ,7) ) ) ,12) ,4,6) ,4) ,4) ) +transpose(transpose(transpose(transpose(arpeggio(echo(transpose(X,-5) ,4,6) ) ,-5) ,4) ,4) ,7) ) ) ) +transpose((((transpose(((transpose(((((transpose((X|echo(X,4,6) ) ,-7) +transpose(transpose(step(transpose(X,4) ,12) ,-5) ,4) ) +transpose(step((X+transpose(X,12) ) ,12) ,7) ) +transpose(arpeggio(arpeggio(transpose(X,-5) ) ) ,12) ) +(echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) +((echo(X,4,6) +arpeggio(transpose(X,4) ) ) +echo((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) |(X+X) ) ,4,6) ) ) ) ,-5) +transpose(transpose(X,4) ,4) ) +transpose((((arpeggio((arpeggio(X) |transpose(transpose(X,-5) ,4) ) ) +step((transpose(echo((X+(X|X) ) ,4,6) ,4) +transpose(transpose(transpose((((X+transpose((X|X) ,4) ) +transpose(transpose(X,4) ,7) ) +transpose(X,7) ) ,4) ,-7) ,12) ) ,12) ) +transpose(((step((X+transpose(X,12) ) ,12) |transpose(transpose(transpose(X,-5) ,-5) ,4) ) +transpose(((shuffle((X|X) ) +transpose(transpose((X+transpose(X,7) ) ,-5) ,12) ) +transpose(transpose(echo(((shuffle(echo(X,4,6) ) +transpose((shuffle(X) +transpose(X,-7) ) ,4) ) +transpose((transpose(X,-5) +transpose(X,12) ) ,7) ) ,4,6) ,4) ,12) ) ,7) ) ,4) ) +transpose((transpose((transpose(transpose(X,4) ,-7) +transpose(((transpose(X,-7) +transpose(echo(X,4,6) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,-5) |(((((X+(X+X) ) +transpose(transpose((X|X) ,4) ,7) ) |((X+transpose(X,7) ) +transpose(transpose(X,-7) ,7) ) ) +transpose(transpose(arpeggio(transpose((X+X) ,-7) ) ,-7) ,4) ) +transpose((((((X+transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,7) ) +transpose(transpose(transpose(X,-5) ,4) ,4) ) +transpose(transpose(transpose((X|X) ,4) ,-5) ,7) ) +transpose((((X+transpose((X|X) ,4) ) +transpose((X+X) ,7) ) |step(transpose(X,-7) ,12) ) ,12) ) +transpose((transpose((((X+transpose(X,12) ) +transpose(X,4) ) |X) ,-7) +transpose((transpose(X,-5) +echo((X|X) ,4,6) ) ,12) ) ,7) ) ,7) ) ) ,7) ) ,7) ) ,4) +echo(step(((step(shuffle(transpose((shuffle(X) +echo(X,4,6) ) ,-5) ) ,12) |transpose(transpose(transpose(((transpose(X,-5) +transpose(step(X,12) ,-5) ) |X) ,4) ,-7) ,-5) ) +transpose(arpeggio(echo(echo(transpose((X|X) ,-7) ,4,6) ,4,6) ) ,-5) ) ,12) ,4,6) ) +transpose(shuffle((echo(echo(transpose((transpose((transpose((step(X,12) +(X|X) ) ,4) |(X|shuffle(X) ) ) ,-7) +transpose(echo(((X+X) |((X+transpose(transpose(X,4) ,4) ) +transpose(step(X,12) ,7) ) ) ,4,6) ,12) ) ,4) ,4,6) ,4,6) +transpose(transpose((((arpeggio((X+X) ) +transpose((arpeggio(arpeggio((X+transpose(X,12) ) ) ) +transpose((transpose(X,4) +(X+transpose(X,7) ) ) ,12) ) ,4) ) +transpose((step((transpose((X|X) ,4) +transpose(transpose(X,-7) ,12) ) ,12) +transpose(transpose((X|X) ,-5) ,12) ) ,7) ) +((shuffle((X|X) ) +transpose(transpose(X,-5) ,4) ) +transpose((((X|step(X,12) ) +(X+transpose(X,12) ) ) +transpose(((X|X) |(X|X) ) ,4) ) ,7) ) ) ,4) ,7) ) ) ,4) ) +transpose(echo(transpose(transpose(transpose(((arpeggio(X) +transpose(step(transpose(X,4) ,12) ,12) ) +echo(step(transpose(X,4) ,12) ,4,6) ) ,-7) ,4) ,-5) ,4,6) ,7) ) ,12) ) ) ,-7) )
random seed used was 0

NOTE: Generated phrase was too large ( 7388 ) , it has been truncated at 5000 notes.


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