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:
# of Tracks:
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After 20 generations the expression "X" became this:
step(((((echo(((echo(step(arpeggio(step(X,12) ) ,12) ,4,6) |(transpose(X,-7) |(echo(X,4,6) |(X+transpose(X,7) ) ) ) ) +transpose((transpose(transpose((X+transpose(X,7) ) ,4) ,-7) +arpeggio(((echo(X,4,6) +transpose((X+transpose(X,7) ) ,7) ) |arpeggio(X) ) ) ) ,7) ) ,4,6) +transpose(((transpose(arpeggio(transpose((X+transpose(X,12) ) ,-7) ) ,4) +transpose(arpeggio((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) ) ,7) ) +transpose(transpose(arpeggio(echo(shuffle(X) ,4,6) ) ,-7) ,7) ) ,7) ) |((transpose(arpeggio(X) ,-5) +transpose(echo(((((shuffle(X) +transpose(X,7) ) |arpeggio((X+transpose(arpeggio(X) ,7) ) ) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(arpeggio((shuffle((X+transpose(X,12) ) ) +step(transpose(X,-7) ,12) ) ) ,4) ,7) ) ,4,6) ,4) ) +transpose(arpeggio((step(transpose(X,-7) ,12) +transpose(((transpose(X,-7) +transpose((X+transpose(X,7) ) ,7) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,12) ) ,7) ) ,7) ) ) ,7) ) ) +transpose((transpose((arpeggio(((((X+transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(X,-7) ,7) ) +(step(X,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ) ) +transpose((transpose(step(X,12) ,4) +(transpose(transpose(X,-5) ,-5) +echo(X,4,6) ) ) ,7) ) ,4) +transpose(transpose((((((arpeggio(transpose(X,-7) ) +transpose((X+transpose(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) ,7) ) |shuffle(transpose(echo(shuffle(X) ,4,6) ,-5) ) ) +transpose(transpose(arpeggio(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,-7) ,4) ) +transpose((shuffle((step(step(X,12) ,12) |(X|X) ) ) |(transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,7) ) ) ,7) ) |(shuffle((((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(echo(X,4,6) ,7) ) +transpose(shuffle(arpeggio(X) ) ,7) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(((step(X,12) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose(shuffle(echo(X,4,6) ) ,7) ) ,-5) ,7) ) ) +transpose(shuffle(transpose(echo(step(X,12) ,4,6) ,-7) ) ,7) ) ) ,4) ,12) ) ,7) ) +((step((transpose(((arpeggio(echo(echo((((step(step((arpeggio(X) +transpose(transpose(X,-7) ,7) ) ,12) ,12) +transpose(transpose(shuffle(X) ,-5) ,4) ) +transpose(step(echo(X,4,6) ,12) ,7) ) |((arpeggio(transpose(X,-5) ) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose((((echo(X,4,6) |echo(X,4,6) ) +transpose((X+transpose(X,7) ) ,7) ) +echo(X,4,6) ) ,7) ) ) ,4,6) ,4,6) ) +transpose((shuffle(((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +transpose((shuffle(transpose(X,4) ) +transpose(echo(echo(X,4,6) ,4,6) ,7) ) ,7) ) +transpose(echo(step(step(X,12) ,12) ,4,6) ,7) ) ) +echo(((((X+transpose(X,7) ) +transpose((shuffle(X) +transpose((step(X,12) +transpose(step(X,12) ,12) ) ,7) ) ,4) ) +transpose((X+transpose(echo(X,4,6) ,7) ) ,7) ) +transpose(step((shuffle(X) +transpose(((X+transpose(X,7) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,7) ) ,12) ,7) ) ,4,6) ) ,7) ) +transpose(((arpeggio(arpeggio(step(transpose(transpose(((X+transpose((X+transpose(X,7) ) ,4) ) +transpose((X+X) ,7) ) ,-7) ,4) ,12) ) ) +transpose(arpeggio((transpose(step((((X+transpose(shuffle(X) ,12) ) +transpose(shuffle(X) ,7) ) |shuffle((step(X,12) +X) ) ) ,12) ,-7) +transpose(step((((X+(transpose(X,4) +transpose(X,7) ) ) +transpose(((transpose(X,-7) +transpose((X+transpose(step(X,12) ,7) ) ,4) ) +transpose(shuffle(X) ,7) ) ,4) ) +transpose(step(echo(X,4,6) ,12) ,7) ) ,12) ,12) ) ) ,4) ) +transpose(step(transpose((((arpeggio(X) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) |echo(transpose(arpeggio(X) ,4) ,4,6) ) ,4) ,12) ,7) ) ,7) ) ,-5) +transpose(((step((step(((echo(X,4,6) |echo(X,4,6) ) +transpose((((X+X) +transpose((X+transpose(X,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,12) +transpose(((shuffle(X) +transpose((X|(X+transpose(transpose(X,4) ,12) ) ) ,4) ) +transpose(((X+transpose(X,12) ) +step(X,12) ) ,7) ) ,-5) ) ,12) +transpose(arpeggio((((X+transpose(X,7) ) +step(X,12) ) |echo((step(X,12) +transpose(X,-5) ) ,4,6) ) ) ,12) ) +transpose((shuffle(((((((step((X+transpose(X,7) ) ,12) +transpose(transpose(arpeggio(X) ,4) ,4) ) +transpose((((X|X) +transpose((X+X) ,4) ) +transpose(arpeggio(X) ,7) ) ,7) ) |echo(X,4,6) ) +transpose(shuffle((X+transpose((X+X) ,7) ) ) ,4) ) +transpose(step(shuffle(shuffle(X) ) ,12) ,7) ) +transpose(arpeggio((((X+transpose(X,12) ) +transpose(arpeggio(X) ,7) ) +transpose(X,4) ) ) ,7) ) ) |echo(transpose((((X+transpose(X,12) ) +transpose((X+transpose(X,12) ) ,7) ) +transpose(X,7) ) ,-5) ,4,6) ) ,7) ) ,-7) ) ,12) +shuffle(step(echo(((transpose(echo((shuffle((transpose(shuffle(transpose((X+transpose(X,7) ) ,-7) ) ,4) |(step(transpose((X+transpose(X,12) ) ,-7) ,12) +(((transpose(X,4) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) +transpose(transpose(X,4) ,7) ) ) ) ) +arpeggio((shuffle(((echo(arpeggio(X) ,4,6) +transpose((transpose(X,-7) |X) ,4) ) +transpose(X,7) ) ) +transpose(((shuffle(step(shuffle(X) ,12) ) +transpose(arpeggio(echo(shuffle(X) ,4,6) ) ,4) ) +transpose(arpeggio(step(step(X,12) ,12) ) ,7) ) ,7) ) ) ) ,4,6) ,-5) +transpose(shuffle(shuffle(((transpose(step(((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ,-5) +transpose(((arpeggio(arpeggio(X) ) +transpose((arpeggio(X) +step(X,12) ) ,4) ) +transpose((shuffle(X) +transpose(step(X,12) ,7) ) ,7) ) ,4) ) +transpose(((((step(X,12) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) +transpose(X,7) ) +transpose((shuffle(X) +transpose((transpose(X,-7) |X) ,12) ) ,7) ) ,7) ) ) ) ,12) ) +transpose(((((transpose(shuffle(shuffle(transpose(step(X,12) ,-7) ) ) ,4) +transpose(shuffle(X) ,4) ) +transpose(((transpose(arpeggio((X+transpose((X|X) ,7) ) ) ,-7) +transpose(((X|X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4) ) +transpose(arpeggio(X) ,7) ) ,7) ) +transpose(shuffle((transpose(echo(X,4,6) ,4) +transpose(step(echo(X,4,6) ,12) ,7) ) ) ,4) ) +transpose((((transpose(echo(transpose(echo(X,4,6) ,4) ,4,6) ,-5) |step(echo(arpeggio(((X+transpose(X,7) ) |((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,4,6) ,12) ) |((arpeggio(echo(((transpose(echo(X,4,6) ,-7) +transpose(arpeggio((X+X) ) ,7) ) |((shuffle(arpeggio(X) ) +transpose(arpeggio(transpose(X,4) ) ,4) ) +transpose((step(X,12) +((X+X) +transpose(shuffle(X) ,7) ) ) ,7) ) ) ,4,6) ) +transpose((echo(arpeggio(transpose((X+transpose(X,7) ) ,-5) ) ,4,6) +transpose(step((transpose(X,-7) +echo(X,4,6) ) ,12) ,12) ) ,4) ) +transpose((((X+transpose(X,7) ) +arpeggio(X) ) |((arpeggio(X) +transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ) +transpose(transpose(echo(((echo(arpeggio(X) ,4,6) +transpose(shuffle((((X+X) +transpose(X,4) ) +transpose((X|X) ,7) ) ) ,4) ) +transpose(shuffle((X+transpose(X,12) ) ) ,7) ) ,4,6) ,4) ,7) ) ,7) ) ,12) ) ,4,6) ,12) ) ) +transpose((step(transpose((((((transpose(echo(step(echo(X,4,6) ,12) ,4,6) ,-5) +transpose(((transpose(transpose((shuffle(arpeggio(arpeggio(X) ) ) +transpose(shuffle(X) ,12) ) ,4) ,-5) |transpose(arpeggio(((shuffle(X) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |(X+transpose(X,12) ) ) ,4) ) +transpose((step(X,12) +transpose(step(X,12) ,7) ) ,7) ) ) ,-5) ) +transpose(shuffle((step(X,12) +transpose((transpose(X,4) +transpose((X+X) ,7) ) ,12) ) ) ,12) ) ,4) ) +transpose(echo(((((echo(((X+transpose(shuffle(X) ,4) ) +transpose(X,7) ) ,4,6) +transpose(((transpose(shuffle(X) ,4) +transpose(((step(shuffle(echo(X,4,6) ) ,12) +transpose((echo((X+transpose(X,7) ) ,4,6) +((X|X) |shuffle(X) ) ) ,4) ) +transpose(transpose(step(echo(X,4,6) ,12) ,4) ,7) ) ,4) ) +transpose(arpeggio(echo(((arpeggio(X) +transpose((X|X) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4,6) ) ,7) ) ,4) ) +transpose(shuffle((((X+X) +transpose(X,4) ) +transpose(X,7) ) ) ,7) ) +transpose((((echo(X,4,6) +transpose(((shuffle(X) +arpeggio(transpose(X,-7) ) ) |(transpose(X,-5) |((transpose(X,-5) +transpose(step(X,12) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ) ,4) ) +transpose(arpeggio((X|X) ) ,7) ) +shuffle(X) ) ,4) ) +transpose(((((step(echo(echo(X,4,6) ,4,6) ,12) +(transpose(X,-5) +transpose((X+(X+transpose(X,7) ) ) ,7) ) ) +transpose(((X+transpose(transpose(shuffle(echo(X,4,6) ) ,-5) ,4) ) +transpose((shuffle(X) +transpose(arpeggio(transpose(X,-5) ) ,12) ) ,7) ) ,4) ) +transpose(transpose(X,-7) ,7) ) +(transpose((X+transpose(X,-7) ) ,-5) +transpose(transpose(shuffle(X) ,-5) ,-5) ) ) ,7) ) ,4,6) ,7) ) +transpose((shuffle((step(((arpeggio(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((transpose(X,-5) +transpose((X|X) ,4) ) +transpose(X,7) ) ,7) ) ,12) |step(echo((shuffle(X) |arpeggio(X) ) ,4,6) ,12) ) ) +(((X+transpose(transpose(X,4) ,7) ) |echo(X,4,6) ) +transpose(step((transpose(transpose(X,-7) ,4) +transpose(((step(X,12) +transpose(shuffle(X) ,4) ) +transpose((X|X) ,7) ) ,12) ) ,12) ,12) ) ) ,7) ) +transpose(echo((((transpose(step(((X|X) +transpose(X,12) ) ,12) ,-5) |echo(X,4,6) ) +transpose(transpose(echo(((step(X,12) +transpose(echo(X,4,6) ,4) ) +transpose(X,7) ) ,4,6) ,4) ,4) ) +transpose(transpose((step(shuffle(X) ,12) +step(X,12) ) ,-7) ,7) ) ,4,6) ,12) ) +transpose(transpose(arpeggio((echo(arpeggio(echo(arpeggio(transpose(X,-7) ) ,4,6) ) ,4,6) |(transpose(step(arpeggio(X) ,12) ,-7) +transpose(shuffle((((X+transpose(X,12) ) +transpose(X,7) ) +transpose(shuffle(X) ,12) ) ) ,-5) ) ) ) ,4) ,12) ) ,-7) ,12) +transpose(((((shuffle((arpeggio(((X+transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) ) +transpose(transpose(X,-5) ,7) ) ) +transpose((transpose(arpeggio(echo(X,4,6) ) ,4) +transpose((shuffle(echo(echo(X,4,6) ,4,6) ) +transpose(((transpose(((transpose(X,4) |transpose(X,-5) ) +echo(echo((X+X) ,4,6) ,4,6) ) ,-7) +transpose((arpeggio(X) +transpose(transpose(shuffle(X) ,-5) ,12) ) ,4) ) +transpose((((transpose(X,4) +transpose(arpeggio(X) ,7) ) |X) +(X+transpose(X,7) ) ) ,7) ) ,7) ) ,12) ) ,7) ) +transpose(echo(arpeggio(transpose(echo((((arpeggio(X) |arpeggio(X) ) +transpose(step(step((arpeggio(X) +transpose((X+transpose(X,12) ) ,7) ) ,12) ,12) ,12) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +((X+transpose(X,12) ) +transpose(X,7) ) ) +transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) +transpose((X+X) ,7) ) ,7) ) ,7) ) ,4,6) ,4) ) ,4,6) ,7) ) +transpose((echo((step(step(transpose(transpose(X,4) ,4) ,12) ,12) |(shuffle(step(transpose(X,4) ,12) ) |((echo(X,4,6) +transpose(arpeggio((X+X) ) ,4) ) +transpose(echo(shuffle(X) ,4,6) ,7) ) ) ) ,4,6) +transpose(((((step(echo(X,4,6) ,12) +transpose(arpeggio(transpose((X|X) ,-7) ) ,4) ) +transpose(((transpose(X,4) +X) +transpose(((shuffle(X) +transpose(shuffle(X) ,7) ) +transpose((step((X+transpose(X,12) ) ,12) +transpose(X,7) ) ,7) ) ,7) ) ,7) ) +transpose(transpose((arpeggio(X) +transpose(X,7) ) ,4) ,12) ) +transpose(step(echo(X,4,6) ,12) ,7) ) ,7) ) ,7) ) +(((((transpose(shuffle((transpose(transpose(step((echo(X,4,6) +transpose(X,7) ) ,12) ,-7) ,4) +transpose(echo((((X+transpose(transpose(X,4) ,7) ) +transpose((echo(X,4,6) +transpose(X,7) ) ,12) ) +transpose(echo(((X+transpose((X+transpose(X,7) ) ,12) ) +transpose((X+transpose(echo(X,4,6) ,7) ) ,7) ) ,4,6) ,7) ) ,4,6) ,7) ) ) ,-7) +transpose(((echo(echo(((((transpose(X,-5) +transpose(echo((X+transpose(X,7) ) ,4,6) ,4) ) +transpose(transpose(arpeggio(X) ,4) ,7) ) +transpose(arpeggio(step(transpose(X,-7) ,12) ) ,4) ) +transpose((transpose((shuffle(X) +transpose(X,7) ) ,4) |(shuffle(X) +transpose(X,12) ) ) ,7) ) ,4,6) ,4,6) +transpose(((X+transpose(X,7) ) +transpose(transpose(echo(step(X,12) ,4,6) ,-7) ,7) ) ,7) ) +transpose(echo((transpose((arpeggio((X+X) ) +step(step(X,12) ,12) ) ,-7) |transpose(echo((X+transpose(X,7) ) ,4,6) ,-5) ) ,4,6) ,7) ) ,7) ) +transpose((((transpose((((((X+transpose(X,12) ) +transpose(X,12) ) +transpose(transpose(X,4) ,4) ) +transpose((X+transpose(echo(X,4,6) ,12) ) ,7) ) |shuffle(echo(shuffle(X) ,4,6) ) ) ,-5) +transpose(shuffle(((((X+transpose((echo(X,4,6) |(X|X) ) ,12) ) +transpose((shuffle(X) +transpose(echo(X,4,6) ,7) ) ,4) ) +transpose(transpose(shuffle(X) ,-7) ,7) ) +transpose(transpose(step(X,12) ,4) ,7) ) ) ,4) ) +transpose(arpeggio(X) ,7) ) +((arpeggio(transpose(((arpeggio(X) +arpeggio(X) ) +(step(X,12) |(X+transpose(X,7) ) ) ) ,4) ) +transpose(step(transpose(((X+transpose(arpeggio(X) ,4) ) +transpose(shuffle(X) ,7) ) ,-5) ,12) ,4) ) +transpose(step((transpose(arpeggio(step(X,12) ) ,-5) +X) ,12) ,7) ) ) ,4) ) +transpose(transpose(((transpose(echo(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,4,6) ,-5) +transpose((transpose(echo(X,4,6) ,-5) +transpose((step(transpose((transpose(X,-7) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ,12) +transpose((X|(step(X,12) +(X+X) ) ) ,7) ) ,7) ) ,7) ) +transpose((((X|X) +transpose(((X+transpose(step(X,12) ,12) ) +transpose(((X+transpose(step(X,12) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,4) ) +transpose(arpeggio(transpose((X|X) ,-7) ) ,7) ) ,4) ) ,4) ,7) ) +transpose(echo((((transpose(echo(((X+transpose(step(X,12) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4,6) ,-7) +shuffle(arpeggio(transpose((arpeggio(X) +arpeggio(X) ) ,4) ) ) ) +transpose(((step(step(transpose(X,-5) ,12) ,12) |transpose(X,-7) ) +(transpose(((transpose(X,-5) +transpose((X+X) ,7) ) +transpose((X+transpose(X,12) ) ,7) ) ,-7) +shuffle(step(transpose(transpose(((X+transpose(X,7) ) +transpose(X,7) ) ,-5) ,4) ,12) ) ) ) ,4) ) +transpose(((((arpeggio(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,12) ) +transpose((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) +transpose((echo((X+transpose(X,7) ) ,4,6) +(X+transpose(X,7) ) ) ,7) ) ,7) ) ) +transpose((((X+transpose(X,7) ) +transpose(transpose(X,-5) ,7) ) +transpose(transpose(((arpeggio(X) +transpose(transpose(X,4) ,4) ) +transpose(step(X,12) ,7) ) ,-5) ,12) ) ,4) ) +transpose(step(echo(((shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose(step(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ,12) ,7) ) ,4,6) ,12) ,7) ) +transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ) +transpose((echo((transpose(transpose(transpose(((arpeggio(X) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,-7) ,4) ,4) |((X+transpose(X,7) ) +transpose(step(X,12) ,7) ) ) ,4,6) +transpose(shuffle(((transpose((X+transpose(X,12) ) ,4) +transpose(echo(((transpose(X,-7) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) +transpose(X,4) ) ,4,6) ,12) ) +shuffle((((step(X,12) +transpose(echo(X,4,6) ,7) ) +transpose(transpose(shuffle(X) ,4) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ) ) ,7) ) ,7) ) ,7) ) ,4,6) ,4) ) +transpose(transpose((transpose((shuffle((arpeggio(X) +transpose(shuffle((X+X) ) ,7) ) ) +transpose(((step(transpose((((X+X) +transpose(echo((X|X) ,4,6) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |arpeggio(X) ) ,7) ) ,-5) ,12) +transpose(transpose((echo(X,4,6) +transpose((transpose(X,-5) +transpose(arpeggio(X) ,12) ) ,7) ) ,-7) ,12) ) +transpose((((transpose(((X+transpose(X,4) ) +transpose((X+X) ,7) ) ,4) +transpose(shuffle(((X+transpose(step(X,12) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((arpeggio(X) +(X+X) ) ,7) ) ,7) ) +transpose(step(echo(step(X,12) ,4,6) ,12) ,7) ) ,7) ) ,12) ) ,-5) +arpeggio(((((transpose(((X|X) |(X+transpose(X,7) ) ) ,-7) +transpose(transpose((X+transpose((X+transpose(X,7) ) ,7) ) ,-7) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose((((echo(X,4,6) +transpose(transpose(shuffle(X) ,4) ,7) ) +transpose(transpose(echo(X,4,6) ,-5) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,12) ) +(((shuffle(X) +(transpose(echo(X,4,6) ,-5) |transpose((X|X) ,4) ) ) +transpose((transpose((transpose(X,-5) +transpose(X,12) ) ,-7) +transpose(step(X,12) ,7) ) ,4) ) +transpose(((transpose(arpeggio(X) ,-5) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) ) ) ) ,-7) ,7) ) ) ,7) ) ,7) ) ) ,12)
random seed used was 143012226

NOTE: Generated phrase was too large ( 6694 ) , it has been truncated at 5000 notes. EXPR = transpose(shuffle(((arpeggio((arpeggio(((((((X+transpose(X,7) ) |transpose(X,4) ) +((X+transpose(X,7) ) |arpeggio(X) ) ) +transpose(arpeggio((X+transpose(X,7) ) ) ,7) ) +transpose((transpose(((arpeggio(step(X,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(step(X,12) ,4) ) +transpose(X,7) ) ,7) ) ,-7) +transpose(((X+((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(X,-7) ) ,7) ) ,4) ) +transpose(step((X|((shuffle(X) +transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) ,12) ,7) ) ) +transpose(transpose((((shuffle(echo(X,4,6) ) +transpose(transpose(X,-7) ,4) ) +transpose(step(X,12) ,7) ) +arpeggio(X) ) ,-5) ,7) ) ) +echo(step(shuffle(((((((X|X) +X) +transpose(((((transpose(X,4) +transpose(((step(X,12) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ,7) ) +transpose(step((X+transpose(X,7) ) ,12) ,7) ) +transpose(((((X+transpose(X,7) ) |X) +transpose(((echo((X+transpose(X,7) ) ,4,6) +transpose(step(shuffle(X) ,12) ,4) ) +transpose(shuffle(echo(X,4,6) ) ,7) ) ,4) ) +transpose(step((arpeggio(X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ,7) ) ,4) ) +transpose((arpeggio(X) +transpose(X,7) ) ,7) ) ,4) ) +transpose(step(echo(X,4,6) ,12) ,7) ) +transpose(((((transpose(arpeggio(((X|X) |X) ) ,-5) |shuffle(shuffle((step(X,12) +transpose((X+transpose(X,7) ) ,12) ) ) ) ) +transpose(transpose((X+X) ,-5) ,4) ) +transpose(transpose(shuffle(transpose(shuffle(X) ,-7) ) ,-7) ,7) ) |transpose(((((X+transpose((X+X) ,4) ) +transpose(shuffle(X) ,7) ) +transpose((X+transpose(X,-5) ) ,4) ) +transpose(((arpeggio((((X+X) +transpose(shuffle(X) ,4) ) +transpose(X,7) ) ) +transpose(echo(X,4,6) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,4) ) ,4) ) +transpose(arpeggio(arpeggio(shuffle(X) ) ) ,7) ) ) ,12) ,4,6) ) |step((transpose(step(shuffle(arpeggio(arpeggio((((((arpeggio(X) +X) +transpose(X,4) ) +transpose((X+X) ,7) ) +transpose(transpose((step(X,12) +transpose(X,7) ) ,-7) ,4) ) +transpose((arpeggio(X) +transpose((X+X) ,4) ) ,7) ) ) ) ) ,12) ,-5) +transpose(((transpose((arpeggio(((X+transpose(X,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) +arpeggio(transpose(echo(X,4,6) ,4) ) ) ,4) +transpose(step(echo((step(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(transpose(X,-7) ,7) ) +transpose((X|X) ,4) ) +transpose((arpeggio(X) +transpose(transpose(X,4) ,12) ) ,7) ) ,12) |((shuffle(transpose(X,-7) ) +transpose(step(X,12) ,4) ) +transpose((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ) ,4,6) ,12) ,7) ) |transpose(shuffle(arpeggio(X) ) ,4) ) ,7) ) ,12) ) ) ,4)
random seed used was 0 EXPR = arpeggio(transpose(shuffle(((arpeggio(transpose((step((((shuffle(X) +transpose(X,4) ) +((X+transpose(X,7) ) +transpose(transpose(transpose((X|X) ,-7) ,4) ,7) ) ) +((transpose(transpose((step((echo(X,4,6) +transpose(transpose(X,4) ,7) ) ,12) |((arpeggio(X) |transpose(X,-7) ) +step(arpeggio(X) ,12) ) ) ,4) ,-7) +transpose(((transpose(transpose(shuffle((X+transpose(X,7) ) ) ,-7) ,4) +transpose(step((step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) +((echo(X,4,6) +transpose((arpeggio(X) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,12) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ,12) ,4) ) +transpose(transpose(((transpose(transpose(step(step(X,12) ,12) ,4) ,-7) +transpose((X+transpose(X,12) ) ,4) ) +transpose(arpeggio((X+transpose(X,7) ) ) ,7) ) ,-5) ,7) ) ,4) ) +transpose(transpose(transpose(echo(transpose(step(X,12) ,4) ,4,6) ,4) ,4) ,7) ) ) ,12) +transpose(arpeggio(shuffle(((transpose((shuffle(step((X+transpose(X,7) ) ,12) ) +transpose(((echo(shuffle(((X+transpose(transpose(X,-5) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ,4,6) +transpose(arpeggio(((transpose(X,4) +transpose(X,4) ) +transpose((X+transpose(X,7) ) ,7) ) ) ,4) ) +transpose(step((step(arpeggio(X) ,12) |transpose((X+transpose(X,7) ) ,4) ) ,12) ,7) ) ,7) ) ,4) +((transpose((((((step(X,12) +transpose(X,7) ) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) +transpose(arpeggio(arpeggio(shuffle(X) ) ) ,4) ) +transpose(X,7) ) ,4) |(((((X+transpose(X,7) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) +transpose((X+transpose(X,12) ) ,7) ) ,4) ) +transpose((X+transpose((((X+transpose(X,7) ) +transpose(arpeggio(X) ,4) ) +transpose(X,7) ) ,7) ) ,7) ) +transpose(((X|(X+X) ) +transpose(transpose(transpose((X+transpose(X,12) ) ,4) ,-7) ,7) ) ,7) ) ) +step((transpose(shuffle(((X+X) +transpose((X+transpose(X,7) ) ,7) ) ) ,-5) +transpose(arpeggio((shuffle(X) +X) ) ,12) ) ,12) ) ) +transpose(echo(echo((X+transpose((X+transpose(X,12) ) ,12) ) ,4,6) ,4,6) ,-7) ) ) ) ,12) ) ,-5) ) |transpose(shuffle(shuffle(((shuffle(transpose(transpose((arpeggio(X) +X) ,-5) ,4) ) +transpose((step(step(transpose(X,-7) ,12) ,12) +transpose(((step((shuffle(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) +echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) ) +transpose(((shuffle((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(arpeggio(shuffle(X) ) ,7) ) ) +transpose(transpose(transpose(X,-7) ,-5) ,4) ) +transpose(step(((step(X,12) +transpose(X,4) ) +transpose(X,7) ) ,12) ,7) ) ,7) ) ,7) ) ,4) ) +transpose(echo((arpeggio(X) |transpose((echo((X+transpose(transpose(X,-5) ,7) ) ,4,6) +step(shuffle(X) ,12) ) ,-7) ) ,4,6) ,7) ) ) ) ,-7) ) +echo(((echo((echo((((step(((echo(shuffle((X+transpose(X,12) ) ) ,4,6) +transpose(((echo(X,4,6) +transpose(X,12) ) +transpose(step((X+transpose(X,7) ) ,12) ,12) ) ,4) ) +transpose((shuffle(X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,7) ) ,12) |shuffle((X+transpose(step(echo(X,4,6) ,12) ,7) ) ) ) +transpose(arpeggio(transpose(shuffle(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ) ,-5) ) ,4) ) +transpose(step(transpose((X+transpose(echo(shuffle(transpose(X,4) ) ,4,6) ,12) ) ,-5) ,12) ,7) ) ,4,6) +transpose(echo(((arpeggio(((X+transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(X,12) ) ,7) ) ) +transpose((shuffle(X) |echo(X,4,6) ) ,7) ) +transpose((transpose((transpose(X,-5) +X) ,-7) +transpose(arpeggio(step(X,12) ) ,7) ) ,12) ) ,4,6) ,7) ) ,4,6) |transpose((((transpose(X,-5) +transpose(transpose((transpose(X,-5) +((((echo(X,4,6) +transpose(X,4) ) +transpose(X,7) ) +transpose((echo(X,4,6) +transpose(X,12) ) ,4) ) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ) ,4) ,4) ) +transpose(arpeggio(arpeggio(X) ) ,7) ) +transpose((echo(shuffle(X) ,4,6) |step((X|(((transpose(X,4) +transpose(transpose(X,4) ,7) ) +transpose((X+X) ,4) ) +transpose(transpose(X,4) ,7) ) ) ,12) ) ,7) ) ,4) ) |(shuffle((shuffle((transpose(step(echo(((arpeggio(X) +(((X+transpose(X,7) ) +transpose(echo(X,4,6) ,4) ) +transpose((X+transpose(transpose(X,-5) ,12) ) ,7) ) ) +transpose(transpose(transpose(X,4) ,-7) ,7) ) ,4,6) ,12) ,4) +transpose(arpeggio((echo(arpeggio((echo(X,4,6) +transpose((step(X,12) +transpose(X,7) ) ,7) ) ) ,4,6) +(X+transpose(arpeggio(shuffle(X) ) ,12) ) ) ) ,12) ) ) +arpeggio(arpeggio(shuffle(echo(echo(echo(X,4,6) ,4,6) ,4,6) ) ) ) ) ) +transpose(step((step(step(step(echo(echo((X+transpose(X,12) ) ,4,6) ,4,6) ,12) ,12) ,12) +transpose(echo(((((arpeggio((X+transpose(X,7) ) ) +transpose(echo(shuffle(step(X,12) ) ,4,6) ,4) ) +transpose(echo(((X+X) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4,6) ,7) ) +transpose((((((step(X,12) +transpose(arpeggio(X) ,7) ) |(transpose(X,4) |arpeggio(X) ) ) +transpose(shuffle(transpose(transpose(shuffle(X) ,4) ,4) ) ,7) ) +transpose((((shuffle(step(shuffle(X) ,12) ) +transpose((transpose(X,-7) |X) ,7) ) +transpose(arpeggio(transpose(transpose((X+transpose(X,7) ) ,-7) ,4) ) ,4) ) +transpose(transpose((X+X) ,-5) ,7) ) ,4) ) +transpose(step(transpose(shuffle(arpeggio(X) ) ,-7) ,12) ,7) ) ,4) ) +transpose((echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) +transpose(arpeggio(echo(X,4,6) ) ,7) ) ,7) ) ,4,6) ,7) ) ,12) ,7) ) ) ,4,6) ) ) ,4) )
random seed used was 0

NOTE: Generated phrase was too large ( 10130 ) , it has been truncated at 5000 notes. EXPR = transpose(arpeggio(arpeggio(transpose(transpose(((echo((transpose(echo(X,4,6) ,4) +transpose(arpeggio(transpose(X,-5) ) ,7) ) ,4,6) +transpose((((transpose(((X+transpose(X,7) ) +transpose(X,7) ) ,-5) +transpose((X+transpose(X,7) ) ,4) ) +transpose(transpose((echo((transpose(X,-5) +transpose((X|X) ,7) ) ,4,6) +transpose((arpeggio(X) +transpose(X,7) ) ,12) ) ,4) ,7) ) +transpose(shuffle((shuffle(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) ) +transpose(shuffle(X) ,7) ) ) ,7) ) ,4) ) +transpose(step((((transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) +transpose((transpose(X,-5) +transpose(((X+X) +transpose(shuffle(X) ,12) ) ,7) ) ,4) ) +transpose(echo(transpose(echo(X,4,6) ,4) ,4,6) ,7) ) +transpose(arpeggio(transpose((transpose(transpose(X,-5) ,-7) |(X+transpose(X,7) ) ) ,-7) ) ,7) ) ,12) ,7) ) ,-7) ,-7) ) ) ,-7)
random seed used was 0


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