This software lets you create studio-quality music on an ordinary PC. It adds randomly-generated patterns of notes to a song. As each pattern is added, you play the role of natural selection by keeping the patterns that sound good and deleting the ones that don't. Each song is divided into tracks with their own synthesized instruments. Each track contains as many patterns as you want to add, and each pattern consists of as many notes as you like.

The license of this software is Free Trial Software, the price is $19.95, you can free download and get a free trial.