It never ceases to amaze me that people find noise so interesting. I bought this CD based on various descriptions using the term "psychedelic" and on some articles I read praising Kawabata (lead guitarist). Before you buy this CD, make sure you listen to the samples. If you like noise, go for it. The first track is about 15 minutes long. You can call it improvisation if by that term you mean 6 or 7 people all playing different instruments at the same time with no coherent unifying theme. ...Now I like "psychedelic" and spacey music, ... But I can't imagine any drug that would make listening to this a pleasure.