Terry Riley- Music for the Gift III

I stumbled upon this little gem on Youtube just today, so i thought i'd share it. Im no expert on Riley's music, but i do love it, and every now and then something just appears online that really just faciniates me, like this little piece. Its tape-looped jazz quartet from 1963, and this avant-garde work really sets the stage for what came directly after it- In C, and consequently the entire minimalist "idea". Whats surprising is how early it was made, and yet its still so refreshing. These kinds of pieces support my thinking that Mr. Riley is one of the most under-rated of major composers from the last 50 years