I call this "Big Giant Worms".
http://www.engineerc.com/~chuckk/biggiantharp.mp3
I made it using my Pure Data just intonation sequencer. It's more dissonant than I intended. I was excited to try a bunch of weird modulations, so I crammed a lot in. But at any rate, this is one thing Pure Data can do that most programs can't.
-Chuckk
-- "It is not when truth is dirty, but when it is shallow, that the lover of knowledge is reluctant to step into its waters." -Friedrich Nietzsche, "Thus Spoke Zarathustra"