The sound quality on this album is great, particularly considering that live recordings in 1970 could be spotty. Of course, this was recorded for a radio broadcast, so that helps. This isn't precisely the same kind of music that Paul Butterfield did with his blues band. Yes, there is a lot of blues in the mix here, but the horns add a lot of jazz to the mix. However you label this thing, though, it's a great set. These guys really know how to jam.
This review is available in book format (hardcover and paperback) in Music Street Journal: 2017 Volume 3 at lulu.com/strangesound.