About Otis Spann
Otis Spann was an American blues musician many consider the leading postwar Chicago blues pianist. Spann was known for his distinctive piano style. He became Muddy Waters' piano player in late 1952 and participated in his first recording session with the band on September 24, 1953. Spann's work for Chess Records includes the 1954 single "It Must Have Been the Devil," backed with "Five Spot," with B.B.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.