This is some of the hottest blues I have ever heard. Wow! The Wolf (real name: Chester Burnett: 1910-1976) was, in the opinion of many musicians and blues fans, the undisputed master of the genre. Hubert Sumlin is on electric guitar, Willie Dixon, bass, Sunnyland Slim, piano, and Clifton James, drums.
A full-length biography of Howlin' Wolf is now available, and a great DVD documentary. If you're interested in the blues and don't know much about it, this is where to start (then try Robert Johnson and John Lee Hooker). You'll be right in the heart and soul of the blues with any of these three.