Delta-bred musicians migrated to Chicago in the 1930s and '40s. These musicians married the rolling rhythms of Country Blues sound of the South to the humming to the Chicago club scene, creating a loud, mean and dirty sound. Howlin' Wolf, Elmore James & Muddy Waters formed amplified blues bands with fellow discharged servicemen. Eventually the scene expanded to include the stark precision of Otis Rush's soul-flavored blues and the Boogie Rock of Jimmy Reed and Robert Nighthawk. Chicago Blues lives today through Buddy Guy and James Cotton and a growing list of newcomers.