If you want blues piano this album is the best. The sound quality is excellent, very atypical for a 1960's album; you'll think you're in the studio with them. I bought the album in 2004 and it contains 6 additional tracks, all of which appear to be additional studio jams, but not necessarily from the same session. There is no information on the album or internet regarding these tracks, and the album doesn't even list the titles. Thus, the total album time is 73 min and well worth the price. If you want to hear absolutely great blues piano without a lot of accompanyment, this is the album to get.