cgMusic - Computer generated music

This is a really amazing little program, it can automatically compose random music.
You can chose from a set of style templates or just go random, when you created your project you can edit it later also and randomize it again to create more variations. The output files are in simple midi format, so it does not sound that good, but it can be enhanced with better instruments in a music composing software afterwards.
So if you need some quick simple soundtracks for a video game or so, try generating some random songs.