This strange music was used in the documentary "The Weather Underground": http://www.imdb.com/title/tt0343168/

I went through all the tracks listed in the film's credits that I could find to identify it - with no result. A few of those tracks are nowhere to be found, though... so does anyone know if this is one of them, or another, unlisted piece?

http://rapidshare.com/files/221321006/wu.mp3