Here's a generator of music for Sonic Pi, the "Live Coding Music Synth" created by Sam Aaron.
The songs are generated by TinyGrammar, a general purpose sentence generator created by me and available on GitHub.
The generator takes samples and synth sounds from Sonic Pi and combines them; the result can be minimal or complex, quiet or percussive - there are a few examples at the bottom of the page.
Due to the random nature of the generation, most of the songs are only noise, but once in a while you get something interesting, maybe usable as a starting point for a true piece of art.
A few song examples:
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