Jon, I have volumes 4 and 5 - Volume 4 has some of the blues accompaniments and the track that particularly distressed me was "Mess Katie Mess". My transfer to CD from the old French CBS LP sound better to my ears. Unless Frémeaux has gone back to 78s, the Hendersons should be from the very desirable Forte 3CD set or the King Jazz, which are the same transfers. If you can get them, the Masters of Jazz series might be a better bet for the blues accompaniments.