With the dynamic, swirling sounds of his Hammond B-3 organ, Wild Bill Davis provided a bridge from the big band swing of the 1930s and '40s to the organ-driven R&B of the 1950s and early '60s. Together with guitarist Floyd Smith and drummer Chris Columbus, Davis set the framework for the jazz organ combo sound. Initially a guitarist, Davis made his debut with Milt Larkin's band in 1939. The group is remembered for the double-saxophone attack of Eddie "Cleanhead" Vinson and Arnett Cobb. Davis, who was inspired by the guitar playing of Freddie Green, remained with the band until...