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:
Seed:
Randomize seed:
Generations:
Phrase for X:
# of Tracks:
Randomize patches:
 

Results may not appear for a few seconds.
Be patient!
Do you like this result? Do you want to let other people listen to it?

Save this one in the
Tune Trove!


See what's already
in the Tune Trove!

After 18 generations the expression "X" became this:
((transpose((echo(((transpose(shuffle(step(arpeggio(transpose(transpose(shuffle(transpose(step(X,12) ,4) ) ,-5) ,-7) ) ,12) ) ,-7) +transpose(transpose(step((arpeggio(((((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(echo(X,4,6) ,4) ,7) ) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) ) +step(step(echo(echo(X,4,6) ,4,6) ,12) ,12) ) ,12) ,4) ,4) ) +transpose(transpose((((((step(step(arpeggio(X) ,12) ,12) +transpose(step(((echo(step(echo(X,4,6) ,12) ,4,6) +transpose(shuffle(arpeggio(X) ) ,4) ) +transpose(transpose(echo(X,4,6) ,4) ,7) ) ,12) ,4) ) +transpose(arpeggio(echo((X+transpose(X,7) ) ,4,6) ) ,7) ) +transpose(step(shuffle(transpose(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ,4) ) ,12) ,7) ) +transpose(shuffle((((((transpose(X,-7) +transpose(X,4) ) +transpose(transpose((X+X) ,-7) ,7) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4) ) +transpose((step(X,12) |step(X,12) ) ,7) ) +transpose(echo(echo(X,4,6) ,4,6) ,7) ) ) ,7) ) +transpose(transpose(((shuffle(((transpose(X,4) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) ) +transpose(step(X,12) ,12) ) |((shuffle(arpeggio(shuffle(X) ) ) +transpose(step(shuffle((X|X) ) ,12) ,4) ) +transpose(shuffle(X) ,7) ) ) ,-5) ,7) ) ,4) ,7) ) ,4,6) |transpose(shuffle(echo(transpose(X,4) ,4,6) ) ,-7) ) ,-5) +transpose(((step((((((echo(((arpeggio((X|X) ) +transpose(transpose(transpose(X,4) ,4) ,12) ) |(transpose(arpeggio(X) ,4) +transpose(X,4) ) ) ,4,6) +transpose(((transpose(echo(step(step(X,12) ,12) ,4,6) ,-7) +transpose(transpose(step(X,12) ,4) ,4) ) +transpose(arpeggio((arpeggio(X) |(shuffle(X) +((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) ,7) ) ,4) ) +transpose(echo((((echo((((X+transpose(X,4) ) +transpose(X,7) ) +shuffle(X) ) ,4,6) +(((X+transpose((X+transpose(X,7) ) ,12) ) +transpose(arpeggio(transpose(X,-5) ) ,4) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +(X+X) ) ,7) ) ) +transpose(echo(step(arpeggio(shuffle(arpeggio(X) ) ) ,12) ,4,6) ,4) ) +transpose(step((arpeggio(shuffle(X) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,12) ,7) ) ,4,6) ,7) ) +transpose(transpose(arpeggio(step(arpeggio((transpose(X,4) +arpeggio(X) ) ) ,12) ) ,-5) ,4) ) +transpose(arpeggio((((((((X+X) +X) +transpose(transpose(X,4) ,4) ) +transpose(shuffle(step(X,12) ) ,7) ) +shuffle(X) ) +transpose((X+X) ,4) ) +transpose((echo(echo(X,4,6) ,4,6) +transpose(transpose(X,4) ,4) ) ,7) ) ) ,7) ) +transpose(transpose(arpeggio(echo(echo(X,4,6) ,4,6) ) ,4) ,-5) ) ,12) +transpose(shuffle(arpeggio(arpeggio(arpeggio(shuffle((transpose(X,4) |echo(echo(transpose(X,-5) ,4,6) ,4,6) ) ) ) ) ) ) ,12) ) +transpose(transpose(echo((step(shuffle((transpose(step((transpose((X+X) ,4) +transpose(X,4) ) ,12) ,4) +transpose((transpose((arpeggio(X) +arpeggio(X) ) ,-7) |step(echo((X+transpose(X,7) ) ,4,6) ,12) ) ,7) ) ) ,12) |step((transpose((shuffle((X|X) ) |(((shuffle(X) |arpeggio(X) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,-7) +transpose(((((((echo(echo(transpose(X,-7) ,4,6) ,4,6) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(shuffle(X) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,12) ) +transpose(shuffle(transpose((X+X) ,-7) ) ,4) ) +transpose(echo(transpose(step(transpose(X,-7) ,12) ,-7) ,4,6) ,7) ) |transpose(X,4) ) |((arpeggio(((((X|((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose(arpeggio(X) ,4) ) +transpose(step(X,12) ,7) ) |shuffle(step(X,12) ) ) ) +transpose((((((X+X) +transpose(transpose((X+transpose(X,7) ) ,4) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) +transpose(arpeggio((X+transpose(X,7) ) ) ,4) ) +transpose(echo(arpeggio(X) ,4,6) ,7) ) ,4) ) +transpose(arpeggio(((X+transpose(arpeggio(X) ,12) ) +echo(X,4,6) ) ) ,7) ) ) +arpeggio((((X+X) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,7) ) ,12) ) +transpose(shuffle(X) ,7) ) ) ) ,12) ) ,12) ) ,4,6) ,4) ,12) ) ,4) ) +transpose(step((((((transpose(step(((arpeggio(echo(X,4,6) ) +transpose(transpose(X,-5) ,12) ) |transpose(arpeggio(X) ,4) ) ,12) ,-5) +transpose((echo((step(transpose(shuffle((((X+transpose((X+transpose(X,12) ) ,4) ) +transpose(X,7) ) +((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ) ,-7) ,12) +transpose(step(((transpose(shuffle(((X+X) +arpeggio(X) ) ) ,-7) +transpose(((echo(shuffle((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,4,6) +(shuffle(transpose(shuffle(X) ,4) ) |shuffle(transpose((X|X) ,-7) ) ) ) +transpose(arpeggio((echo(echo(transpose(X,4) ,4,6) ,4,6) +(((X+transpose(X,7) ) +transpose(X,12) ) +(X|step(X,12) ) ) ) ) ,7) ) ,4) ) +transpose(echo(step(step((((X+transpose(X,12) ) +transpose((X|X) ,4) ) +transpose(arpeggio(X) ,7) ) ,12) ,12) ,4,6) ,7) ) ,12) ,7) ) ,4,6) +shuffle(step((shuffle((((echo(transpose(transpose(echo(X,4,6) ,-5) ,-5) ,4,6) +(shuffle((X+transpose(X,7) ) ) +transpose(shuffle(((X+X) +transpose(shuffle(X) ,7) ) ) ,7) ) ) +transpose(echo(shuffle(transpose((X+X) ,-5) ) ,4,6) ,4) ) +transpose(transpose((arpeggio(transpose(X,4) ) +transpose(shuffle(transpose(X,-5) ) ,7) ) ,-7) ,7) ) ) +transpose(echo((transpose(echo(X,4,6) ,4) +(arpeggio(((X+transpose(X,7) ) +transpose(step(step(step(X,12) ,12) ,12) ,12) ) ) |(echo(transpose(transpose(X,-7) ,-5) ,4,6) +(X+shuffle(X) ) ) ) ) ,4,6) ,12) ) ,12) ) ) ,4) ) +transpose(shuffle(arpeggio(transpose(transpose(shuffle(echo(((transpose(X,-5) |transpose(echo(X,4,6) ,4) ) +(((arpeggio(X) +transpose((X+X) ,4) ) +transpose(X,7) ) +transpose(echo(((X+transpose(transpose(X,-5) ,4) ) +transpose(echo(X,4,6) ,7) ) ,4,6) ,12) ) ) ,4,6) ) ,4) ,-5) ) ) ,7) ) +transpose((echo((((echo((arpeggio(((echo((X|X) ,4,6) +transpose((echo(echo(X,4,6) ,4,6) |transpose(arpeggio(X) ,-7) ) ,4) ) +transpose(echo(arpeggio(X) ,4,6) ,7) ) ) +(shuffle(((X+transpose(X,4) ) +transpose(X,7) ) ) +transpose((X|(X+transpose(X,7) ) ) ,12) ) ) ,4,6) +transpose(shuffle(step(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) ) +transpose(step(((((echo((X+X) ,4,6) +transpose((step(X,12) +transpose(X,7) ) ,4) ) +transpose(echo((X+transpose(X,12) ) ,4,6) ,7) ) +transpose((step(X,12) +transpose(arpeggio(X) ,7) ) ,4) ) +transpose(echo((X+transpose(transpose(X,-5) ,12) ) ,4,6) ,7) ) ,12) ,7) ) |echo(((echo(shuffle(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(shuffle(X) ,4) ) +transpose(transpose(X,-7) ,7) ) ) ,4,6) |echo(transpose(X,-5) ,4,6) ) +transpose(X,12) ) ,4,6) ) ,4,6) +transpose((step((shuffle(transpose((X+transpose(X,12) ) ,4) ) |echo(((X|X) +transpose(arpeggio((X+transpose(X,12) ) ) ,12) ) ,4,6) ) ,12) +transpose(arpeggio(transpose(transpose(echo(X,4,6) ,-5) ,-7) ) ,7) ) ,12) ) ,4) ) +transpose(transpose(((shuffle(echo(step(shuffle(((X+transpose(X,12) ) |echo((X+X) ,4,6) ) ) ,12) ,4,6) ) +transpose(((transpose((arpeggio(echo(transpose(X,-5) ,4,6) ) +transpose(shuffle((transpose(echo(X,4,6) ,-5) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,12) ) ,7) ) ) ,12) ) ,-7) |transpose(((echo(transpose((echo(echo(X,4,6) ,4,6) +(echo(echo(X,4,6) ,4,6) +transpose(shuffle(X) ,7) ) ) ,4) ,4,6) +transpose(((shuffle((X|((X+transpose(X,4) ) +transpose(X,7) ) ) ) |arpeggio((X+transpose(X,7) ) ) ) +(((echo(transpose(transpose(X,-7) ,-7) ,4,6) +transpose(step(transpose(X,-5) ,12) ,4) ) +transpose(((((X+transpose(X,4) ) +transpose(arpeggio(X) ,7) ) +transpose((arpeggio(X) +X) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) |(((X|X) |shuffle(X) ) +transpose(step(X,12) ,12) ) ) ) ,4) ) +transpose(((((X+transpose(echo(transpose(echo(X,4,6) ,-5) ,4,6) ,4) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(transpose(X,4) ,7) ) ,-7) ,7) ) +transpose(((X+X) +step(X,12) ) ,4) ) +transpose(((echo((X|X) ,4,6) +transpose(transpose(X,4) ,12) ) +transpose(X,7) ) ,7) ) ,7) ) ,4) ) +transpose(step((step((transpose(echo(step(X,12) ,4,6) ,-5) +transpose(echo(((X|X) +transpose((X+transpose(X,7) ) ,7) ) ,4,6) ,12) ) ,12) +shuffle(echo((transpose(step(X,12) ,4) |transpose(step((X+transpose(X,7) ) ,12) ,4) ) ,4,6) ) ) ,12) ,7) ) ,4) ) +transpose(((echo(((((((X+X) +transpose(step(X,12) ,12) ) +transpose(((transpose((echo(X,4,6) +transpose((X|X) ,12) ) ,4) +transpose(shuffle(X) ,-7) ) +transpose(arpeggio(((step(shuffle(X) ,12) +transpose(((step(X,12) +transpose(transpose(X,4) ,4) ) +transpose((X|X) ,7) ) ,4) ) +transpose(echo(X,4,6) ,7) ) ) ,12) ) ,4) ) +transpose(shuffle(step((((X+transpose(X,4) ) +transpose(X,7) ) |((X+transpose(X,4) ) +transpose(step(X,12) ,7) ) ) ,12) ) ,7) ) +transpose((echo((((((X+transpose(X,7) ) +transpose((X+X) ,7) ) +transpose(step(transpose(X,-7) ,12) ,4) ) +transpose(((echo(X,4,6) +transpose(transpose(X,-7) ,4) ) +transpose(X,7) ) ,7) ) |step(step(X,12) ,12) ) ,4,6) |transpose(transpose(transpose(X,-5) ,4) ,4) ) ,4) ) +transpose(transpose(((((((X+transpose(X,4) ) +transpose(X,7) ) |transpose(shuffle(X) ,-5) ) |arpeggio(transpose(shuffle(X) ,4) ) ) +transpose((X+transpose(transpose(X,-5) ,12) ) ,4) ) +transpose((shuffle(X) |((X+transpose(X,4) ) +transpose(X,7) ) ) ,7) ) ,-7) ,7) ) ,4,6) +transpose(step(echo(echo(step(echo(((echo(X,4,6) +transpose(transpose(step(X,12) ,-5) ,4) ) +transpose(((echo(echo(X,4,6) ,4,6) +transpose(X,4) ) +transpose((X|X) ,7) ) ,7) ) ,4,6) ,12) ,4,6) ,4,6) ,12) ,4) ) +transpose((((((shuffle(echo(((X|X) +transpose(echo(((transpose(X,4) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,4,6) ,7) ) ,4,6) ) +transpose(arpeggio(step(arpeggio((transpose(X,4) |step((X+X) ,12) ) ) ,12) ) ,7) ) +transpose(echo(echo(((transpose((X|X) ,-5) |X) |transpose(arpeggio(shuffle(step(X,12) ) ) ,-5) ) ,4,6) ,4,6) ,4) ) +transpose(((((((arpeggio(echo(X,4,6) ) +transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(step(X,12) ,7) ) ,4) ) +transpose(X,7) ) |transpose((((X+transpose(X,12) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(transpose(X,-5) ,7) ) ,-5) ) +transpose(transpose((((X+X) +(X+echo(X,4,6) ) ) +transpose(step(echo(X,4,6) ,12) ,7) ) ,-5) ,4) ) +transpose(echo(((X+transpose(X,12) ) |transpose(arpeggio(X) ,4) ) ,4,6) ,7) ) +transpose((((transpose(shuffle(transpose(echo(X,4,6) ,4) ) ,4) +transpose((((((transpose(X,4) +transpose(X,7) ) +step(X,12) ) +transpose((transpose((X|X) ,4) |transpose(X,4) ) ,12) ) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) |arpeggio(echo(arpeggio(X) ,4,6) ) ) ,4) ) +transpose(((X+X) +(transpose(transpose(X,-7) ,-7) +shuffle(echo(shuffle(X) ,4,6) ) ) ) ,7) ) ,4) ) +transpose((echo(shuffle(transpose(arpeggio(step(X,12) ) ,-7) ) ,4,6) |(((step(arpeggio(X) ,12) +transpose(arpeggio(X) ,-5) ) +X) +transpose((step(echo(transpose(X,4) ,4,6) ,12) +(X+transpose(X,7) ) ) ,7) ) ) ,7) ) +(transpose((step((X+transpose(shuffle(X) ,12) ) ,12) |((((shuffle(step(X,12) ) +transpose(X,4) ) +transpose(arpeggio(X) ,7) ) +transpose(transpose(X,-5) ,4) ) +transpose(((arpeggio(X) +transpose((X+X) ,4) ) +transpose(shuffle(X) ,7) ) ,7) ) ) ,-5) +transpose(transpose(step(arpeggio(((shuffle(X) +transpose(arpeggio(X) ,4) ) +transpose((X+(X|X) ) ,7) ) ) ,12) ,4) ,12) ) ) ,12) ) ,7) ) +transpose(((transpose(step((step(echo(X,4,6) ,12) +transpose(shuffle(step(((((X+transpose(X,7) ) |shuffle(X) ) +transpose(X,4) ) +transpose(transpose(step(X,12) ,-5) ,7) ) ,12) ) ,7) ) ,12) ,-5) +transpose(((shuffle(echo(X,4,6) ) +transpose(transpose(echo(X,4,6) ,4) ,4) ) +transpose(echo(echo(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ,4,6) ,4,6) ,7) ) ,4) ) +transpose(transpose(((transpose(((step(X,12) +transpose(echo((X+transpose(echo(X,4,6) ,7) ) ,4,6) ,4) ) +transpose(((shuffle(step(transpose(X,4) ,12) ) +transpose(echo((shuffle(X) +transpose(X,7) ) ,4,6) ,4) ) +transpose(echo(X,4,6) ,7) ) ,7) ) ,-5) +transpose(transpose(shuffle((step(X,12) |transpose(transpose(X,4) ,-7) ) ) ,-7) ,4) ) +transpose((((((shuffle(X) +transpose(transpose((X|X) ,4) ,4) ) +transpose(step((X|echo(X,4,6) ) ,12) ,7) ) +transpose(X,7) ) +transpose(echo(arpeggio(X) ,4,6) ,4) ) +transpose((((shuffle(echo(((X+transpose(X,4) ) +transpose(X,7) ) ,4,6) ) +transpose(transpose((X|X) ,4) ,4) ) +transpose(((X|X) +transpose(X,12) ) ,7) ) +transpose(echo(((X+transpose(shuffle(X) ,4) ) +transpose(shuffle(X) ,7) ) ,4,6) ,7) ) ,7) ) ,7) ) ,-5) ,7) ) ,4) ) +transpose(transpose((step(((transpose(X,-7) +transpose(((((echo(X,4,6) +transpose(X,4) ) +transpose(X,7) ) +transpose((transpose(X,4) +transpose(arpeggio(X) ,12) ) ,4) ) +transpose(arpeggio(X) ,7) ) ,4) ) +transpose(step(transpose((transpose(X,-7) |X) ,-7) ,12) ,7) ) ,12) +((((arpeggio(((shuffle(transpose(X,4) ) +transpose(echo(X,4,6) ,4) ) +transpose(arpeggio(X) ,7) ) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-7) ,7) ) +transpose(step(step(shuffle(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ,12) ,12) ,7) ) +transpose((arpeggio(((((X+transpose(X,4) ) +transpose(X,7) ) +shuffle(X) ) |arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ) ) +transpose(echo(transpose(arpeggio((((step(X,12) +transpose((X+X) ,7) ) +transpose(echo(X,4,6) ,4) ) +transpose(transpose(X,-5) ,7) ) ) ,-5) ,4,6) ,12) ) ,4) ) +transpose(arpeggio(((echo(transpose(X,-5) ,4,6) +arpeggio(X) ) |echo(step(transpose(X,-7) ,12) ,4,6) ) ) ,7) ) ) ,-5) ,7) ) ,7) ) ,7) ) ,4) ,4) ) +transpose(transpose(arpeggio(shuffle(transpose(echo(transpose((transpose(shuffle(((transpose(X,-5) +transpose((X+transpose(X,7) ) ,4) ) +transpose(((X+transpose(X,12) ) |X) ,7) ) ) ,4) +transpose(shuffle(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) ,12) ) ,4) ,4,6) ,4) ) ) ,-7) ,7) ) ,12) ,7) )
random seed used was 36533249

NOTE: Generated phrase was too large ( 41288 ) , it has been truncated at 5000 notes. EXPR = (((step(transpose((arpeggio((transpose((echo(step(X,12) ,4,6) +arpeggio(((arpeggio(X) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ) ) ,-7) +transpose(transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-7) ,12) ) ) |(arpeggio(arpeggio((transpose(X,4) +transpose(X,12) ) ) ) +transpose(echo(transpose(arpeggio(echo(X,4,6) ) ,-5) ,4,6) ,7) ) ) ,4) ,12) +transpose(transpose((shuffle(echo(echo(step(((arpeggio(echo(transpose((((X+transpose(X,7) ) +transpose(arpeggio(X) ,4) ) +transpose(arpeggio(X) ,7) ) ,-5) ,4,6) ) +transpose(arpeggio(transpose(echo(echo(X,4,6) ,4,6) ,-7) ) ,4) ) +transpose((transpose(((X+transpose(X,12) ) +transpose((X+X) ,7) ) ,-5) |step(step(arpeggio(X) ,12) ,12) ) ,7) ) ,12) ,4,6) ,4,6) ) +transpose(transpose(((arpeggio(echo(step(X,12) ,4,6) ) +transpose(((echo(((((X+transpose(arpeggio(X) ,4) ) +transpose(X,7) ) +transpose(X,-5) ) +transpose(transpose(X,4) ,7) ) ,4,6) +transpose((X+transpose(X,7) ) ,-7) ) +transpose(echo((step(arpeggio(X) ,12) +transpose((step(X,12) +transpose(X,7) ) ,7) ) ,4,6) ,-7) ) ,4) ) +transpose(((shuffle(echo(transpose(X,4) ,4,6) ) +transpose(arpeggio(((step(X,12) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) ) ,4) ) +transpose((X+arpeggio(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(X,7) ) ) ) ,7) ) ,7) ) ,-7) ,7) ) ,-7) ,7) ) +transpose((transpose(transpose((echo(step(transpose((((step(echo(((X+(X+X) ) +transpose((step(X,12) +transpose(X,-7) ) ,12) ) ,4,6) ,12) +((echo(X,4,6) +transpose(((shuffle(step(X,12) ) +transpose(arpeggio(X) ,4) ) +transpose(transpose((X+transpose((X+transpose(X,12) ) ,7) ) ,-5) ,7) ) ,4) ) +transpose(((((shuffle(X) +echo(X,4,6) ) +transpose((X|X) ,4) ) +transpose((X+transpose(X,-5) ) ,7) ) +transpose((X+X) ,7) ) ,7) ) ) +transpose(((transpose((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,12) ) ,4) +transpose(shuffle(((step(X,12) +transpose(X,4) ) +transpose(shuffle(X) ,7) ) ) ,12) ) +transpose(step(arpeggio((X|X) ) ,12) ,12) ) ,4) ) +transpose(transpose(echo(X,4,6) ,4) ,7) ) ,-5) ,12) ,4,6) |((step(transpose((((step(X,12) +transpose((shuffle(step(X,12) ) +transpose((((X|X) +transpose(X,4) ) +transpose((X+X) ,7) ) ,12) ) ,4) ) +transpose(echo(transpose(((X+transpose((X+X) ,4) ) +transpose(X,7) ) ,-5) ,4,6) ,7) ) +transpose((echo(X,4,6) +transpose((X+transpose(X,12) ) ,12) ) ,-5) ) ,-5) ,12) +transpose(shuffle(transpose(((arpeggio(X) +transpose(transpose(X,-7) ,7) ) |((((X|X) +transpose((X+X) ,4) ) +transpose(echo(X,4,6) ,7) ) +transpose(transpose(X,-5) ,7) ) ) ,4) ) ,12) ) +((((step(echo(transpose(step(transpose(X,-7) ,12) ,-5) ,4,6) ,12) +transpose(transpose(step(transpose(((arpeggio(X) |X) +transpose(((X+transpose(X,7) ) +transpose(transpose(X,-5) ,7) ) ,12) ) ,4) ,12) ,4) ,4) ) +transpose(transpose(echo((step(echo(X,4,6) ,12) +(((X|X) +transpose(X,4) ) +transpose(echo(X,4,6) ,7) ) ) ,4,6) ,4) ,7) ) +transpose(shuffle(arpeggio(arpeggio(X) ) ) ,4) ) +transpose(transpose(shuffle((((arpeggio(X) +transpose(X,4) ) +transpose(X,7) ) +echo(transpose(echo(X,4,6) ,-7) ,4,6) ) ) ,4) ,7) ) ) ) ,4) ,-7) +transpose(shuffle((((((arpeggio(echo(X,4,6) ) +transpose(((echo(shuffle(transpose(shuffle(step((X+X) ,12) ) ,4) ) ,4,6) +transpose((((X|X) +transpose((shuffle(echo(X,4,6) ) +transpose((((transpose(X,4) +transpose(X,12) ) |(X+X) ) +transpose((transpose((X+X) ,4) |X) ,12) ) ,12) ) ,4) ) +transpose((echo(step(X,12) ,4,6) +transpose(echo(X,4,6) ,-5) ) ,7) ) ,4) ) +transpose(shuffle(transpose(transpose(transpose(X,4) ,4) ,4) ) ,7) ) ,4) ) +transpose(transpose(shuffle(transpose(((X|X) |shuffle(step(step(X,12) ,12) ) ) ,-7) ) ,-7) ,7) ) +transpose(((transpose(shuffle((((X+transpose(X,4) ) +transpose(X,7) ) +X) ) ,-7) +transpose(transpose(transpose(X,4) ,-7) ,4) ) +transpose(transpose(arpeggio(X) ,-7) ,7) ) ,7) ) +transpose(step(arpeggio(echo(transpose(((X|X) +transpose(transpose(X,4) ,12) ) ,4) ,4,6) ) ,12) ,4) ) +transpose(((echo(transpose(transpose(X,-5) ,4) ,4,6) +transpose(transpose((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X|X) ,4) ) +transpose(X,7) ) |(transpose(X,-7) |(X|X) ) ) ,-5) ,4) ) +transpose(step(step(X,12) ,12) ,7) ) ,7) ) ) ,-7) ) ,12) ) +transpose((((transpose(transpose((X|transpose(X,-5) ) ,-5) ,-5) |arpeggio(echo(((transpose(X,4) |((step(transpose(X,4) ,12) +transpose(X,4) ) +transpose(arpeggio(step(X,12) ) ,7) ) ) +transpose(echo(((((transpose(X,4) +transpose(echo(X,4,6) ,4) ) +transpose((X+X) ,7) ) +transpose(((echo(X,4,6) +transpose(((X+transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,4) ) +transpose(X,7) ) ,4) ) +transpose(step((X+transpose(X,12) ) ,12) ,7) ) ,4) ) +transpose((transpose(X,-7) |transpose(transpose(X,-5) ,-5) ) ,7) ) ,4,6) ,7) ) ,4,6) ) ) +step(echo(arpeggio(transpose(transpose(((arpeggio((transpose(echo(step(transpose(X,-5) ,12) ,4,6) ,-7) +transpose(echo(transpose(arpeggio(X) ,-7) ,4,6) ,7) ) ) +transpose((arpeggio(((X+X) +((((X+X) +transpose((X+transpose(X,12) ) ,12) ) +transpose(transpose(step(X,12) ,4) ,12) ) +arpeggio(((X+transpose(X,4) ) +transpose((X+X) ,7) ) ) ) ) ) +transpose(((transpose((shuffle(X) |step((((X+transpose(X,4) ) +transpose(X,7) ) +(X+X) ) ,12) ) ,-7) +transpose(step(transpose(X,-5) ,12) ,4) ) +transpose((((X+X) +X) |shuffle(transpose(((X+transpose(X,7) ) +transpose(arpeggio(X) ,7) ) ,-7) ) ) ,7) ) ,12) ) ,4) ) +transpose(transpose((echo(transpose(((transpose(X,-5) +transpose(arpeggio(X) ,4) ) +transpose(transpose(X,-5) ,7) ) ,4) ,4,6) |shuffle(((transpose(arpeggio(echo(X,4,6) ) ,4) +transpose(transpose(((arpeggio(X) +transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,-5) ,4) ) +transpose(X,7) ) ) ) ,-7) ,7) ) ,-7) ,4) ) ,4,6) ,12) ) +transpose(transpose(step(((step(transpose((shuffle(arpeggio(transpose(X,4) ) ) +transpose(((arpeggio(X) +transpose(arpeggio(shuffle(X) ) ,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ,7) ) ,-7) ,12) +((transpose((arpeggio((X|X) ) |echo(X,4,6) ) ,-7) +transpose((arpeggio(X) +transpose(arpeggio(step(transpose(((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,4) ) +transpose(transpose(X,-5) ,7) ) ,4) ,12) ) ,7) ) ,4) ) +transpose((((arpeggio(transpose((arpeggio(X) +transpose(X,7) ) ,4) ) +transpose(shuffle(echo(echo((transpose(X,-7) +arpeggio(X) ) ,4,6) ,4,6) ) ,4) ) +transpose(step(step((X|X) ,12) ,12) ,7) ) |echo(((arpeggio((X|X) ) +transpose(shuffle(shuffle(echo(X,4,6) ) ) ,4) ) +transpose((X+transpose(X,7) ) ,7) ) ,4,6) ) ,7) ) ) +transpose((((transpose((((step(X,12) |(X+X) ) +transpose(transpose(arpeggio(step(X,12) ) ,4) ,4) ) +transpose(transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,-5) ,7) ) ,-5) |(step(((transpose(((step(X,12) +transpose((((X+transpose(X,4) ) +transpose(X,7) ) +transpose(X,-7) ) ,4) ) +transpose(echo((X+transpose(X,7) ) ,4,6) ,7) ) ,-7) +transpose(transpose((echo(step(X,12) ,4,6) +transpose(X,12) ) ,-5) ,4) ) +transpose(echo((arpeggio(X) +arpeggio(X) ) ,4,6) ,7) ) ,12) |((step(((transpose(transpose(X,4) ,-5) +transpose(arpeggio(((X+transpose(X,4) ) +transpose(X,7) ) ) ,4) ) +transpose(X,7) ) ,12) +transpose((((transpose(X,4) +transpose(transpose(X,-5) ,4) ) +transpose(X,7) ) +transpose(X,12) ) ,4) ) +transpose(((((((X+transpose(X,4) ) +transpose(X,7) ) +transpose((X+transpose(X,7) ) ,4) ) +transpose(X,7) ) +transpose(arpeggio(((X+transpose(shuffle(X) ,4) ) +transpose(X,7) ) ) ,4) ) +transpose((X|(X|X) ) ,7) ) ,7) ) ) ) +transpose(step(transpose(echo(transpose(echo(X,4,6) ,4) ,4,6) ,-5) ,12) ,4) ) +transpose((transpose(transpose((shuffle(transpose(X,-5) ) |arpeggio(X) ) ,4) ,-5) +(echo(X,4,6) +((transpose(X,-7) +transpose(X,4) ) +transpose(((X+transpose(X,4) ) +transpose(X,7) ) ,7) ) ) ) ,7) ) ,7) ) ,12) ,-5) ,7) ) ,7) )
random seed used was 0

NOTE: Generated phrase was too large ( 11880 ) , it has been truncated at 5000 notes.


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