Riley- Assassin Reverie

I just heard a work by Terry Riley called Assassin Reverie performed by the ARTE quartet and it was absolutely amazing. Its for sax quartet and electronics and I think its one of the only pieces of music that affected my physically as well as emotionally

Its starts out as sort of a jazz influenced saxaphone work, but then it introduces the electronics, and it just gets freaky. It uses some really terrifying sounds combined with screaming saxaphones and whenever I listen to it i find myself so tense thats its hard to move around afterwards:P.

There are lots of other works I think that try to achieve this affect but this piece does it more convincingly than any other. Has anybody else heard this piece and did it affect you that much? And if you haven't heard it I definitely recommend getting the album by the ARTE quartet. Its definently an experience