Credits

Muddy Waters: Guitar
Sonny Boy Williamson: Harmonica, Vocals
Otis Spann: Piano
Willie Dixon: Bass
Lafayette Leake: Piano
Jimmy Rogers: Guitar
Luther Tucker: Guitar
Robert Lockwood, Jr.: Guitar
Odie Payne: Drums
Fred Below: Drums
Valerie Wilmer: Photography
Neil Terk: Original Art Direction
Phil Chess: Producer
Leonard Chess: Producer