This is from the abstract of the paper from the Proceedings of the National Academy of Sciences: "Music evolves as composers, performers, and consumers favor some musical variants over others. To investigate the role of consumer selection, we constructed a Darwinian music engine consisting of a population of short audio loops that sexually reproduce and mutate. This population evolved for 2,513 generations under the selective influence of 6,931 consumers who rated the loops’ aesthetic qualities. We found that the loops quickly evolved into music attributable, in part, to the evolution of aesthetically pleasing chords and rhythms."
The results are at DarwinTunes.org. You can listen as a track develops—evolves—from a vague electronic riff, if you can even call it a riff, to full-fledged music.
You just have to hear it to understand it.
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