Fractal Music Lab provides examples and explanations of fractal music, music composed using the same types of iterative or recursive processes that are used to create fractal images.
It includes discussions of algorithmic composition, random music, Voss music, chaotic attractor music, Mandelbrot music and more. Each section provides a short explanation of the idea behind the technique, a little bit of theory, and a Java-based applet that automatically generates music using the technique.
There’s also a library of music that uses these techniques. Check out Guiseppi Mendoza’s Impositive Increments. It’s generated with a program of his own design that creates sequences that drive synthesizer arpegiators. If you’re interested in getting into this type of composition, there is software available on the site for download.