Other reviews listed here at Amazon will give you the history of this CD, so I'll just give my opinion of the music/sound. I expected these remastered "live" and "radio" tapes to be rough, but these are really rough! The vocals are barely audible on all of the tracks, unfortunately. I saw the group open for Hendrix in Cincinnati in 1967 or 1968, and it was the first time I'd heard the Soft Machine's music. I was hooked; they sounded great. But the recordings here do not reflect what I remember at all. It's almost unlistenable to me, so I won't be pulling this CD out often. It's a "for extreme collectors" only, as far as I'm concerned. I was disappointed.