I had this on vinyl and during my many moves it finally got left behind. I have to admit at the time I brought this back in those glorious 60's I never fully appreciated the works of Terry Riley but time matures us and now I fully appreciate this great LP. TR was ahead of his time and influenced many, Mike Oldfield and Eno/Fripp of King Crimson.
Its an LP I play to unwind and to meditate to.