In a nutshell, genes in Nature acquire random changes. If the changes interfere with reproduction, they are thrown in the bin; otherwise they stick around. I use the same logic for writing music in collaboration with others, so far composer Luke Cissell and artist/mathwiz Christopher Hanusa. We make changes to music in a more or less random fashion as if it were DNA then discard the pieces that make for lousy music. If the piece is somewhat workable, we keep it and continue to change it. We use the ideas in a bigger framework as well and I'll be writing more about that when the time is right.