John Lee "Sonny Boy" Williamson was one of the most popular blues harmonica players and singers from the late 1930s through the 1940s. Recording for the Bluebird Records and RCA Victor labels, Sonny Boy shaped Chicago's music scene with an innovative style that gave structure and speed to blues harmonica performance. His recording in 1937 of "Good Morning, School Girl," followed by others made him a hit with Southern black audiences who had migrated north. Unfortunately, his popularity and...