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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Phrase for X:
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After 20 generations the expression "X" became this:
transpose(arpeggio(transpose((transpose(step(transpose(transpose(((X+transpose(X,12) ) +transpose(transpose(transpose(transpose(X,-5) ,-5) ,4) ,12) ) ,-7) ,4) ,12) ,4) |(transpose((transpose(transpose(transpose((transpose((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,-5) +transpose(echo(X,4,6) ,12) ) ,-5) ,4) ,-5) +transpose(((transpose(transpose(transpose(((arpeggio(X) +transpose(echo(echo(X,4,6) ,4,6) ,4) ) +transpose(transpose(X,-7) ,7) ) ,-5) ,-5) ,4) +transpose((echo((transpose(echo(step(X,12) ,4,6) ,-5) |(((X+X) +transpose(X,-7) ) +(transpose(X,-5) +transpose(transpose((X+transpose(X,12) ) ,-7) ,12) ) ) ) ,4,6) |shuffle(((transpose(transpose(echo(echo(X,4,6) ,4,6) ,-7) ,-7) +transpose(transpose(X,-5) ,-7) ) |transpose(X,-7) ) ) ) ,7) ) +transpose((echo((shuffle(arpeggio(step(transpose(X,-5) ,12) ) ) +transpose(echo(echo(transpose(X,-5) ,4,6) ,4,6) ,-7) ) ,4,6) +transpose(transpose(((((X+transpose(X,4) ) +transpose(X,7) ) |(X+transpose(X,12) ) ) +transpose(((transpose(X,4) +X) |transpose(X,-7) ) ,12) ) ,-7) ,12) ) ,4) ) ,7) ) ,-5) +transpose(transpose(echo(transpose(echo((transpose((step(transpose(X,-7) ,12) |(X|X) ) ,-5) |step(transpose(((X+(X+X) ) |transpose((X+transpose(X,12) ) ,4) ) ,-7) ,12) ) ,4,6) ,-5) ,4,6) ,4) ,7) ) ) ,-5) ) ,-7)
random seed used was 245773105 EXPR = step((transpose(step(((((arpeggio(echo(shuffle(step(transpose(transpose(X,-7) ,-7) ,12) ) ,4,6) ) |(transpose(step(transpose((step(step(X,12) ,12) +(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) +transpose((transpose(X,4) |(X+X) ) ,7) ) ) ,-5) ,12) ,4) +transpose(transpose(transpose(transpose(arpeggio((transpose((echo(transpose(X,-7) ,4,6) +X) ,4) |(arpeggio((X+X) ) +transpose(arpeggio(transpose(X,-5) ) ,12) ) ) ) ,-7) ,4) ,-5) ,12) ) ) +transpose(transpose(((arpeggio(X) |transpose(echo(echo((X|X) ,4,6) ,4,6) ,-5) ) +(transpose(transpose((((X|X) +transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,-5) ,-7) +transpose(step(transpose(transpose((((X+transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose((X+transpose(X,12) ) ,7) ) ,-5) ,-5) ,12) ,12) ) ) ,-5) ,7) ) +transpose(((step((transpose(((echo(X,4,6) +transpose(((step(transpose(X,-5) ,12) |echo(transpose(X,-7) ,4,6) ) +transpose(transpose(echo((X+transpose(X,12) ) ,4,6) ,-5) ,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,-5) +(transpose((step(arpeggio(step(X,12) ) ,12) +transpose((step(echo(transpose(X,-5) ,4,6) ,12) +(((X+transpose(X,4) ) +transpose(X,7) ) +(X+transpose((X+transpose(X,12) ) ,12) ) ) ) ,7) ) ,-5) +transpose(transpose(arpeggio((((step(X,12) +transpose(transpose(X,-7) ,7) ) |((X+transpose(X,7) ) |X) ) +((transpose(transpose((X+transpose(X,12) ) ,-5) ,-5) +transpose((step(X,12) +X) ,4) ) +transpose((((transpose(X,4) |transpose(X,-7) ) +transpose(arpeggio((X+transpose(X,7) ) ) ,4) ) +transpose((X+X) ,7) ) ,7) ) ) ) ,4) ,12) ) ) ,12) +transpose(transpose(arpeggio(transpose((((step(X,12) |(X|X) ) |arpeggio(X) ) +transpose(echo(X,4,6) ,12) ) ,4) ) ,-7) ,12) ) |transpose(transpose(echo(arpeggio(((((transpose(X,4) |transpose(X,-7) ) +transpose(X,7) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,7) ) ,12) ) +((((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(echo(transpose(arpeggio(X) ,-7) ,4,6) ,4) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,7) ) ) ) ,4,6) ,4) ,4) ) ,12) ) +((transpose(transpose(transpose(echo((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,-7) ) ,12) ) ,4,6) ,4) ,-5) ,-5) +transpose(((transpose((((X+X) +(((X+transpose(X,4) ) +transpose(X,7) ) +(X+transpose(X,12) ) ) ) +(((X+X) |step(X,12) ) +transpose(((X+transpose(step(X,12) ,4) ) +transpose(transpose(X,4) ,7) ) ,12) ) ) ,4) +transpose(transpose(((X|X) +arpeggio(X) ) ,-5) ,-7) ) |((arpeggio(step(transpose(transpose(transpose(X,-7) ,-7) ,-5) ,12) ) +transpose(transpose(arpeggio(arpeggio(transpose((X+transpose(X,12) ) ,4) ) ) ,4) ,4) ) +transpose((transpose((arpeggio(echo(((X|X) +X) ,4,6) ) +transpose((transpose(shuffle(arpeggio(X) ) ,4) +transpose((X+(echo(X,4,6) +transpose(X,-5) ) ) ,7) ) ,7) ) ,-7) |shuffle((((((((X+transpose(X,4) ) +transpose(X,7) ) |X) |transpose(X,-7) ) |(((X+X) |((X+transpose(X,4) ) +transpose(X,7) ) ) +X) ) +transpose(transpose(X,4) ,4) ) +(((X+transpose(transpose(X,-7) ,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) +transpose(step(X,12) ,7) ) ) ) ) ,7) ) ) ,12) ) |transpose(((transpose((transpose((((X+transpose(X,7) ) +transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,-7) +((X+transpose((X+transpose(X,12) ) ,4) ) +transpose((X+echo(X,4,6) ) ,7) ) ) ,-5) |transpose(echo(((X+transpose(X,12) ) |(((X+transpose(X,4) ) +transpose(X,7) ) |X) ) ,4,6) ,4) ) +transpose((step((transpose(X,4) |(X+X) ) ,12) +transpose(transpose(transpose(X,4) ,-7) ,12) ) ,12) ) ,-7) ) ) ,12) ,-7) |echo((transpose((((((((transpose(transpose(transpose(echo((X+X) ,4,6) ,4) ,-5) ,-7) +transpose(step(((transpose(X,-7) +transpose(transpose((((X+X) |(X+transpose(X,7) ) ) |(X+(X+X) ) ) ,-7) ,12) ) +transpose(shuffle(((transpose(X,-7) |transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ) ,-7) ) ,12) ,4) ) +transpose(arpeggio(arpeggio(transpose((transpose(X,-7) +arpeggio(X) ) ,-7) ) ) ,7) ) |echo((arpeggio(transpose(((transpose(shuffle(X) ,4) +transpose((echo(X,4,6) +transpose(X,12) ) ,4) ) +transpose(transpose(((X+X) +transpose(transpose(X,4) ,12) ) ,4) ,7) ) ,-7) ) +((X+transpose(X,7) ) +transpose(((X|X) +(((X+transpose(X,7) ) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ) ,-7) ) ) ,4,6) ) +transpose((((transpose(transpose(transpose(echo(((X+transpose(X,12) ) +(X+transpose(X,7) ) ) ,4,6) ,4) ,-5) ,-5) |((step((arpeggio(transpose((X|X) ,4) ) +transpose(echo((X+X) ,4,6) ,12) ) ,12) +transpose((((transpose(X,-5) +transpose((X+transpose(X,7) ) ,12) ) +transpose(transpose(X,-7) ,12) ) |(transpose(((X+transpose((transpose(X,-5) |transpose(X,-5) ) ,4) ) +transpose((X|X) ,7) ) ,-7) +transpose((X+transpose(transpose((X+X) ,-5) ,12) ) ,12) ) ) ,7) ) |transpose(transpose(transpose(X,-7) ,4) ,-5) ) ) |((transpose(transpose(transpose(((transpose(X,4) +X) +(((X+X) +transpose(X,4) ) +((X+transpose(transpose(X,4) ,4) ) +transpose(X,7) ) ) ) ,-7) ,-5) ,-7) |(transpose(shuffle(step(X,12) ) ,4) +transpose((transpose(transpose(shuffle((X+X) ) ,-7) ,-5) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ) +(transpose(((echo(X,4,6) +(X|X) ) +transpose(X,-5) ) ,-7) |(shuffle(transpose(X,4) ) |transpose((echo(X,4,6) +transpose(((X+X) |(X|((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,7) ) ,-5) ) ) ) ) +((transpose(arpeggio(X) ,-5) |(transpose((X+transpose(X,12) ) ,-7) |step(transpose(transpose(X,4) ,-7) ,12) ) ) +transpose((arpeggio((arpeggio(transpose(X,-7) ) +transpose(transpose((transpose(X,-7) |X) ,4) ,12) ) ) +transpose(echo(X,4,6) ,-7) ) ,7) ) ) ,4) ) +transpose(((((((((((transpose(X,-7) +(X|X) ) +transpose(((echo(X,4,6) +transpose(X,4) ) +transpose(((X|X) |X) ,12) ) ,4) ) +transpose(transpose(X,-7) ,7) ) |transpose((((X+transpose(X,7) ) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,-5) ) +transpose((transpose(((X+transpose(X,12) ) |X) ,4) +transpose(X,-7) ) ,7) ) +transpose(((transpose(transpose(X,-7) ,4) +transpose((echo(transpose(transpose(transpose(X,-5) ,4) ,-7) ,4,6) |step((transpose(X,4) +transpose(transpose(((X+X) +transpose(transpose(X,4) ,12) ) ,4) ,12) ) ,12) ) ,4) ) +transpose(transpose((echo(X,4,6) +transpose(transpose(X,-7) ,4) ) ,4) ,7) ) ,4) ) +transpose((transpose(transpose(X,4) ,-7) |transpose((transpose(X,-7) |echo(step(X,12) ,4,6) ) ,-7) ) ,7) ) +transpose((((echo(shuffle(transpose(X,-5) ) ,4,6) +(((step(X,12) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) +transpose(echo(echo(X,4,6) ,4,6) ,12) ) ) +transpose(((transpose((X+transpose(X,7) ) ,-5) |shuffle(step(X,12) ) ) +transpose(echo(transpose(X,-5) ,4,6) ,4) ) ,4) ) +transpose(echo(step(X,12) ,4,6) ,7) ) ,4) ) +transpose(echo(arpeggio(((((X+X) +transpose(echo((X+transpose(X,7) ) ,4,6) ,4) ) +transpose(((X+transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,7) ) +transpose(arpeggio((X+X) ) ,7) ) ) ,4,6) ,7) ) |(transpose(echo(step(echo(X,4,6) ,12) ,4,6) ,4) +(((X|((X+transpose(X,7) ) +transpose(X,-7) ) ) |((X+X) +transpose(echo(transpose(X,4) ,4,6) ,12) ) ) |(transpose(transpose(step(X,12) ,-5) ,-5) +transpose(transpose(X,-5) ,7) ) ) ) ) ,7) ) |echo(arpeggio(((((transpose(step(arpeggio(shuffle((X|X) ) ) ,12) ,-5) +transpose(((transpose((X|X) ,-5) +(shuffle(X) +transpose(transpose(X,-7) ,7) ) ) +transpose((((step(X,12) |step(arpeggio(X) ,12) ) +transpose(transpose((X+transpose(X,12) ) ,-7) ,-5) ) |((transpose(X,4) +transpose((X|X) ,12) ) +transpose(transpose(transpose(X,4) ,4) ,7) ) ) ,-7) ) ,12) ) +(((X+(shuffle(transpose(X,4) ) +arpeggio(transpose(X,4) ) ) ) +((shuffle(echo((X+transpose(X,7) ) ,4,6) ) +transpose(((X|shuffle(X) ) +transpose(transpose(transpose(X,-7) ,4) ,7) ) ,7) ) +transpose(((transpose(X,-7) |echo(X,4,6) ) +transpose((X+transpose(X,12) ) ,12) ) ,7) ) ) +(((step(X,12) +(X|X) ) +transpose((X+transpose((X|X) ,12) ) ,12) ) |transpose(transpose(transpose(X,4) ,-7) ,-7) ) ) ) +transpose(transpose((transpose(transpose(step(arpeggio(X) ,12) ,-7) ,-7) +arpeggio(shuffle(echo(transpose((X+X) ,-5) ,4,6) ) ) ) ,-7) ,4) ) +transpose(transpose(transpose(transpose((step((transpose(X,-5) +shuffle(transpose(X,-7) ) ) ,12) +transpose(transpose(((X+transpose((X|X) ,4) ) +transpose(X,7) ) ,4) ,7) ) ,-5) ,-5) ,4) ,7) ) ) ,4,6) ) +transpose(echo(transpose(step((shuffle(((transpose(X,4) |(arpeggio(((X+transpose(shuffle(X) ,4) ) +transpose(transpose(transpose(X,-5) ,4) ,7) ) ) +(((transpose(arpeggio(X) ,-5) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,4) ) +transpose(shuffle(X) ,7) ) +transpose(X,12) ) ) ) |(transpose((transpose(transpose(transpose(X,-5) ,-5) ,-7) +(echo(X,4,6) +transpose((X+transpose((X|X) ,7) ) ,12) ) ) ,-7) +(transpose((X+X) ,4) +transpose(echo(shuffle(echo((X+transpose(X,7) ) ,4,6) ) ,4,6) ,12) ) ) ) ) +transpose(((step(echo(transpose((X+transpose((X+transpose(X,12) ) ,7) ) ,4) ,4,6) ,12) +step(step(arpeggio((X+transpose(step(X,12) ,12) ) ) ,12) ,12) ) +transpose(arpeggio(transpose(transpose(shuffle(transpose(X,-5) ) ,-7) ,-7) ) ,7) ) ,7) ) ,12) ,4) ,4,6) ,12) ) ,-7) |echo(transpose(transpose((((transpose(transpose(((shuffle(X) +transpose((X+transpose(X,12) ) ,7) ) +(transpose(X,-5) +(X|X) ) ) ,4) ,-5) +transpose(step(arpeggio(step((transpose(step(X,12) ,4) +X) ,12) ) ,12) ,4) ) +transpose(shuffle(echo(echo(shuffle(X) ,4,6) ,4,6) ) ,7) ) +transpose((shuffle(transpose(transpose((shuffle(step(X,12) ) |(((X+transpose(X,12) ) +shuffle(X) ) +transpose(shuffle((X|X) ) ,7) ) ) ,-7) ,4) ) |(transpose((echo((transpose(X,-7) +transpose(step(X,12) ,12) ) ,4,6) |(transpose(X,-5) |(X+X) ) ) ,4) +(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +transpose(echo(X,4,6) ,12) ) ) ) ,12) ) ,-7) ,-5) ,4,6) ) ,4,6) ) ,12)
random seed used was 0

NOTE: Generated phrase was too large ( 7766 ) , it has been truncated at 5000 notes. EXPR = transpose(transpose((((((transpose((echo(transpose(transpose(shuffle(((X+X) +X) ) ,-5) ,4) ,4,6) +(((transpose((((X|X) +transpose(shuffle(X) ,4) ) +transpose((X+X) ,7) ) ,-5) +transpose((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +transpose((X+transpose(X,7) ) ,-7) ) ,12) ) +transpose((transpose(transpose(X,-5) ,4) +echo(arpeggio(transpose(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,-7) ) ,4,6) ) ,4) ) +transpose(transpose(echo((arpeggio(step(X,12) ) +transpose(step(X,12) ,12) ) ,4,6) ,4) ,7) ) ) ,-5) +transpose(transpose(((((transpose(X,4) +shuffle(transpose(echo(X,4,6) ,4) ) ) +transpose(X,-7) ) +transpose(((X|echo((X+transpose(X,12) ) ,4,6) ) +transpose((((X+(shuffle(X) +transpose((X|X) ,7) ) ) +((X+transpose(X,7) ) |(X|X) ) ) +transpose((arpeggio(X) +transpose((transpose(X,-5) +(X|X) ) ,12) ) ,7) ) ,7) ) ,4) ) +transpose((transpose(transpose((((X|X) +transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) ,4) ,-7) |transpose(transpose(X,4) ,-5) ) ,7) ) ,4) ,12) ) +transpose(transpose(step((transpose((echo(((X+X) +transpose((X+X) ,7) ) ,4,6) +echo(step(X,12) ,4,6) ) ,-5) +transpose((transpose((transpose(arpeggio(((arpeggio(X) +transpose(transpose(X,-5) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ,-5) |transpose(((X+transpose(transpose(X,-7) ,7) ) +transpose((X+X) ,-5) ) ,-7) ) ,-5) +transpose(((X+transpose(transpose((X+((X|X) +transpose((X+transpose(X,7) ) ,12) ) ) ,-7) ,12) ) +(transpose((X+transpose(transpose(X,-7) ,7) ) ,4) +echo(step(transpose(X,4) ,12) ,4,6) ) ) ,7) ) ,7) ) ,12) ,4) ,4) ) +transpose(transpose(transpose(arpeggio(((((transpose((step(transpose(((X|X) +transpose(echo(X,4,6) ,7) ) ,-7) ,12) |((X+X) +transpose(echo(X,4,6) ,12) ) ) ,-5) +transpose(transpose(transpose(X,-7) ,-5) ,4) ) +transpose(transpose(transpose(shuffle(step(transpose(X,-5) ,12) ) ,-7) ,4) ,7) ) |transpose(((X+step(X,12) ) +transpose((transpose(X,4) |X) ,7) ) ,4) ) +(shuffle(((transpose(X,4) +transpose((transpose(X,4) +X) ,12) ) |(shuffle(transpose(X,-7) ) +transpose(shuffle(transpose(X,-7) ) ,12) ) ) ) +(transpose(transpose(X,4) ,-7) |arpeggio(((X+X) +(X|X) ) ) ) ) ) ) ,4) ,-7) ,7) ) +shuffle(((((echo(echo((X+transpose(X,7) ) ,4,6) ,4,6) +transpose((((X+transpose((X+transpose(X,7) ) ,12) ) |arpeggio(X) ) +transpose((X+transpose((X+transpose(X,12) ) ,12) ) ,7) ) ,7) ) +transpose((transpose(shuffle(transpose(X,-7) ) ,-5) +transpose(shuffle((echo(X,4,6) |X) ) ,7) ) ,4) ) +transpose(((X+transpose(transpose(X,-5) ,7) ) +X) ,7) ) +transpose((echo(transpose((transpose(X,-7) |X) ,-5) ,4,6) |((arpeggio(((X|X) |X) ) +transpose((echo(transpose(X,4) ,4,6) |X) ,7) ) +transpose(echo((X+transpose(transpose(X,-7) ,12) ) ,4,6) ,12) ) ) ,7) ) ) ) +((transpose((transpose(transpose((transpose(echo(((transpose(X,-7) +(X+X) ) +echo((X+X) ,4,6) ) ,4,6) ,-7) +transpose(transpose(step((transpose(X,-5) |transpose(X,4) ) ,12) ,-5) ,12) ) ,4) ,4) +(((transpose(transpose((step(transpose((X+X) ,4) ,12) |transpose((X+transpose(X,7) ) ,4) ) ,4) ,-5) +transpose(transpose(step(X,12) ,-5) ,12) ) |(transpose(echo(transpose(transpose(X,4) ,4) ,4,6) ,4) +step(((arpeggio(X) |echo(X,4,6) ) +echo(echo((X+transpose(X,12) ) ,4,6) ,4,6) ) ,12) ) ) +transpose(((step(echo(((X+X) +((X+transpose(X,4) ) +transpose(shuffle(X) ,7) ) ) ,4,6) ,12) +transpose(transpose(echo(((transpose(X,-7) +transpose(transpose(echo((X|X) ,4,6) ,-5) ,4) ) +transpose((((((transpose(X,4) +transpose(X,-7) ) +transpose(X,4) ) +transpose(((X+transpose(X,12) ) +(X+X) ) ,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(((step(X,12) +transpose(transpose(X,4) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,7) ) ,4,6) ,-7) ,4) ) +transpose((echo(((X+X) +transpose((X|X) ,12) ) ,4,6) |(transpose((((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(X,12) ) ,-7) +step(arpeggio(X) ,12) ) ) ,7) ) ,7) ) ) ,-5) +(transpose(transpose(((transpose(transpose(((transpose(X,4) +transpose((X+X) ,4) ) +transpose(X,7) ) ,-5) ,-5) +transpose(transpose((transpose((X+X) ,-5) +transpose((X|X) ,7) ) ,4) ,4) ) +transpose(((transpose(X,4) |((X+transpose(X,4) ) +transpose(arpeggio(X) ,7) ) ) +transpose(((transpose(shuffle(X) ,4) +transpose(X,4) ) +transpose(((X+X) +transpose((X+X) ,12) ) ,7) ) ,7) ) ,7) ) ,-7) ,-5) +transpose(((((((transpose(((X+transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) ,-7) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) +transpose(transpose(((X+transpose(X,12) ) |transpose(transpose(X,-5) ,-5) ) ,-7) ,4) ) +transpose(((transpose(step((echo(X,4,6) +X) ,12) ,4) +shuffle(transpose(transpose(step(X,12) ,-7) ,4) ) ) +transpose(((transpose(((transpose(X,-7) |transpose(X,-5) ) +transpose(((X|X) +(X+X) ) ,12) ) ,-5) +transpose(((step(step(step(step(X,12) ,12) ,12) ,12) +transpose(((((step(X,12) +transpose(X,-7) ) +transpose(echo(X,4,6) ,4) ) +transpose((X|X) ,7) ) +transpose(transpose((X|X) ,-7) ,7) ) ,7) ) +(((X+transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(X,12) ) ) ,4) ) +transpose((echo(echo((X+transpose(X,12) ) ,4,6) ,4,6) |shuffle(((X+transpose(X,12) ) +((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) ,7) ) ,7) ) ,4) ) +transpose(((shuffle(((((X+transpose(X,12) ) |(X+X) ) |shuffle(X) ) +(transpose(X,-5) |(X+transpose(X,7) ) ) ) ) +transpose(transpose(arpeggio(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ,4) ,12) ) |transpose((((X+X) +(X+X) ) +transpose(((X|X) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,-7) ) ,7) ) +(transpose(transpose(((((((X|X) +(X+transpose(X,7) ) ) +transpose(((echo(transpose(X,-5) ,4,6) +transpose(transpose(transpose(X,-7) ,-5) ,4) ) +transpose((transpose(X,4) +((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,4) ) +transpose(echo(echo(arpeggio(X) ,4,6) ,4,6) ,7) ) +transpose(echo(X,4,6) ,7) ) +(transpose(step(transpose(X,-7) ,12) ,4) |arpeggio(shuffle(X) ) ) ) ,4) ,-7) +((((shuffle((X+X) ) +transpose(transpose(X,-7) ,12) ) |step(shuffle(X) ,12) ) |((transpose((X+X) ,4) +(((X+transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose(X,7) ) ) +transpose(transpose(transpose((X+X) ,-5) ,4) ,12) ) ) |((X|(((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(transpose(X,4) ,7) ) +X) ) |step(shuffle(transpose((transpose(step(X,12) ,-5) +(((X+transpose(X,12) ) +transpose(X,7) ) |transpose((X+X) ,4) ) ) ,4) ) ,12) ) ) ) ) +transpose(((transpose(((transpose(X,4) +transpose(X,4) ) +transpose((X|X) ,7) ) ,-7) |((transpose((((X+transpose((X+transpose(X,12) ) ,4) ) +transpose((X+X) ,7) ) |((X+transpose(X,7) ) |X) ) ,-5) +transpose(transpose(transpose(X,-5) ,-7) ,4) ) +transpose((transpose(transpose(shuffle((X+X) ) ,-5) ,-7) +((echo((X+transpose(X,7) ) ,4,6) +transpose(transpose(transpose(X,-5) ,-7) ,4) ) +transpose(step(X,12) ,7) ) ) ,7) ) ) +transpose(((transpose(transpose(X,-7) ,-5) |(transpose(((transpose(X,4) |(X|X) ) |(transpose(X,-5) |X) ) ,-7) |(echo(transpose(X,4) ,4,6) +transpose(transpose((X|transpose(X,-5) ) ,-7) ,7) ) ) ) |((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(shuffle(X) ,-7) ,12) ) +(transpose((shuffle(X) |(transpose(X,-7) +(X+step(X,12) ) ) ) ,-7) +transpose(transpose(X,-5) ,12) ) ) ) ,12) ) ,12) ) ,12) ) ) +(transpose(((echo((transpose(shuffle((X+transpose(X,12) ) ) ,-7) +(transpose(transpose(((((X|X) +transpose((transpose(X,-5) |shuffle(X) ) ,4) ) +transpose(X,7) ) +arpeggio(transpose(X,-5) ) ) ,-7) ,-5) +transpose(arpeggio(((X+transpose(X,12) ) |X) ) ,12) ) ) ,4,6) +transpose(transpose(echo(arpeggio(transpose(transpose(transpose(((X|X) +transpose((X+X) ,12) ) ,-5) ,-5) ,-7) ) ,4,6) ,-7) ,4) ) +transpose(transpose(transpose(transpose(step(transpose(transpose(transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,-7) ,-5) ,-5) ,12) ,4) ,-5) ,4) ,7) ) ,-7) |shuffle(((((transpose(transpose((transpose((X+X) ,-7) +transpose(shuffle(step(transpose(transpose(X,-7) ,-7) ,12) ) ,7) ) ,4) ,-7) +transpose(arpeggio(echo(transpose(transpose(shuffle((shuffle(X) +transpose((X+transpose(X,7) ) ,7) ) ) ,-5) ,-5) ,4,6) ) ,4) ) +transpose(transpose((transpose(transpose(step(transpose((X+X) ,-5) ,12) ,4) ,-5) +transpose(transpose(X,-5) ,12) ) ,4) ,7) ) +transpose(shuffle((transpose(((echo((X+transpose(X,12) ) ,4,6) +transpose(X,4) ) +transpose(transpose(transpose(X,-5) ,-5) ,7) ) ,-5) +arpeggio(transpose(((X+transpose(X,12) ) +(X+X) ) ,4) ) ) ) ,7) ) +(shuffle(transpose(step(transpose(transpose((((echo(X,4,6) |X) +transpose((X|X) ,4) ) +transpose(step((X|X) ,12) ,7) ) ,-5) ,-7) ,12) ,-5) ) +shuffle((transpose(echo(transpose((((X+transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) ,-5) ,4,6) ,-7) |arpeggio(X) ) ) ) ) ) ) ) ) ,-7) ,4)
random seed used was 0 EXPR = transpose(transpose((echo(echo(transpose(((shuffle(step(step(transpose(((X+transpose(X,12) ) +transpose(transpose((X+X) ,4) ,12) ) ,-7) ,12) ,12) ) +transpose((echo(shuffle((((echo((X+transpose((X+X) ,12) ) ,4,6) +transpose(X,4) ) +transpose(transpose((X+transpose(X,12) ) ,4) ,7) ) |((((((arpeggio(X) +transpose(X,4) ) +transpose((X+X) ,7) ) +(arpeggio(X) +transpose((X|X) ,7) ) ) +transpose(transpose(X,4) ,4) ) +transpose(((X+transpose(X,7) ) |echo(X,4,6) ) ,7) ) |((X+transpose(X,12) ) +transpose(((X+X) +transpose(transpose(X,-7) ,12) ) ,12) ) ) ) ) ,4,6) +((transpose(transpose((X+transpose(X,12) ) ,4) ,-7) +transpose(shuffle(((arpeggio(((echo(X,4,6) +transpose(X,4) ) +transpose(transpose(X,-7) ,7) ) ) |((X|X) +transpose(X,7) ) ) |echo(shuffle((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,4,6) ) ) ,4) ) +transpose((transpose(echo(shuffle(X) ,4,6) ,-5) +transpose(((((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,4) ,7) ) +transpose((X+X) ,12) ) +transpose(shuffle(X) ,12) ) ,-5) ) ,7) ) ) ,4) ) +transpose((transpose(echo((step(transpose((X+transpose(echo(transpose(X,4) ,4,6) ,12) ) ,4) ,12) +transpose(transpose(transpose(((X|(X|X) ) +step((X+transpose(X,7) ) ,12) ) ,-5) ,4) ,7) ) ,4,6) ,-5) +transpose(echo((((shuffle(transpose((((transpose(X,4) |X) +transpose(X,4) ) +transpose((transpose(X,-5) +transpose(transpose(X,-7) ,12) ) ,7) ) ,-5) ) |((((X+transpose(X,4) ) +transpose(X,7) ) +((step(X,12) +transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) +transpose(transpose(X,-7) ,7) ) ) +transpose(transpose(echo(((X+transpose(step(echo(X,4,6) ,12) ,7) ) +(((X+transpose(X,7) ) |(X+X) ) |(X+transpose(echo(X,4,6) ,7) ) ) ) ,4,6) ,4) ,4) ) +transpose(((step(((transpose(X,-7) +transpose(X,-5) ) +transpose(((transpose(X,-5) +transpose(X,4) ) +transpose(arpeggio(transpose(X,-5) ) ,7) ) ,7) ) ,12) |transpose((transpose((transpose(X,-7) |(((X+transpose(X,4) ) +transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ,-5) |(transpose((X|X) ,-7) +(step((X+transpose(X,12) ) ,12) +transpose(transpose(X,-7) ,12) ) ) ) ,-7) ) +transpose(echo(transpose(transpose(echo((X+(X+transpose(echo(X,4,6) ,12) ) ) ,4,6) ,-5) ,-7) ,4,6) ,7) ) ,7) ) ,4,6) ,7) ) ,7) ) ,-5) ,4,6) ,4,6) +transpose(((transpose((echo(((transpose(((X+transpose((X|X) ,-5) ) |(arpeggio(echo(X,4,6) ) +step(X,12) ) ) ,-5) +transpose(((((((transpose((X+transpose(X,7) ) ,4) |transpose(X,4) ) +transpose(transpose((X+X) ,-5) ,12) ) |transpose(X,4) ) |transpose((shuffle(X) +transpose(X,-5) ) ,-7) ) +(((X+X) +transpose(arpeggio(X) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) |transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step((step(X,12) +transpose((X+X) ,7) ) ,12) ,7) ) ,-7) ) ,4) ) +transpose(((((X+transpose(transpose(X,-5) ,7) ) +transpose(step(X,12) ,12) ) |((X+X) +transpose(transpose(X,-7) ,12) ) ) +transpose(transpose(transpose(arpeggio(X) ,4) ,-5) ,12) ) ,7) ) ,4,6) +transpose(arpeggio(step(transpose(arpeggio(X) ,-7) ,12) ) ,-7) ) ,4) +transpose(transpose(step(transpose((transpose((transpose((shuffle((X+transpose(step(X,12) ,12) ) ) +transpose(shuffle(X) ,-7) ) ,-5) |((X+transpose(X,7) ) +(X+transpose(X,12) ) ) ) ,4) +transpose(echo((arpeggio(transpose(X,-5) ) |(((X+X) +X) +(step(X,12) +shuffle(X) ) ) ) ,4,6) ,-7) ) ,-5) ,12) ,-5) ,4) ) +transpose((step(((transpose((step(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(X) ,7) ) +X) +(((X+transpose(X,12) ) +transpose(shuffle((X+transpose(X,12) ) ) ,4) ) +transpose(transpose(X,4) ,7) ) ) +X) ,12) +transpose(((((transpose(X,-5) +(X+transpose(X,12) ) ) +transpose(transpose((X+X) ,-7) ,4) ) +transpose(X,7) ) |(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose((((X|X) |((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(shuffle(step(X,12) ) ,7) ) ,7) ) |(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose(X,7) ) ) ) ,7) ) ,-7) +transpose(transpose(shuffle(arpeggio((X|transpose(step(X,12) ,4) ) ) ) ,4) ,4) ) +transpose(transpose(step(echo(((X|(X+transpose(X,12) ) ) +transpose(arpeggio(X) ,12) ) ,4,6) ,12) ,-7) ,7) ) ,12) +(transpose(transpose((step(transpose(arpeggio(X) ,4) ,12) |((((echo(X,4,6) |X) +transpose(arpeggio(transpose(X,-5) ) ,7) ) +(((X+transpose(transpose(X,-7) ,4) ) +transpose(step(X,12) ,7) ) +transpose(echo(transpose(X,-5) ,4,6) ,7) ) ) +transpose(echo(echo(X,4,6) ,4,6) ,12) ) ) ,-7) ,-7) +transpose((((((echo(X,4,6) +shuffle(X) ) |echo(transpose(X,4) ,4,6) ) +transpose(transpose((transpose(X,-5) +transpose(transpose((transpose(X,4) |arpeggio(X) ) ,-5) ,7) ) ,4) ,4) ) +transpose(step(shuffle(transpose((X+X) ,-7) ) ,12) ,7) ) +transpose((((((step(((transpose(X,4) +transpose(transpose((X|X) ,-7) ,4) ) +transpose(X,7) ) ,12) |(((echo(X,4,6) |transpose(X,-5) ) +transpose((((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,12) ) ,4) ) +transpose(transpose(step(X,12) ,-5) ,7) ) ) |echo(arpeggio(shuffle(X) ) ,4,6) ) +transpose(transpose(transpose(transpose(X,-7) ,4) ,-7) ,7) ) +(((transpose(((X+X) +X) ,-5) +(transpose((X+transpose(X,7) ) ,4) +transpose((X+(X+X) ) ,12) ) ) +arpeggio(transpose(X,4) ) ) |transpose(X,4) ) ) +(transpose(transpose(((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(transpose(X,4) ,7) ) ,-7) ,-7) +transpose(step(transpose((X+transpose(X,12) ) ,4) ,12) ,12) ) ) ,12) ) ,7) ) ) ,7) ) ,-5) ) ,-7) ,-7)
random seed used was 0

NOTE: Generated phrase was too large ( 43316 ) , it has been truncated at 5000 notes.


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