Here's a web archive of the music of the strangest composers to grace the earth, most performed by the San Francisco Symphony. I can't describe it better than they do on the homepage:

It's all about the music. This is the place where you roll up your sleeves and get your ears dirty. Hear composers speak their minds through melody, dissonance, or just plain frankness.

My favorite is Henry Cowell's Syncronicity about halfway down on the right.







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