Leadbelly, Robert Johnson, Charley Patton-we are all familiar with the story of the Delta blues. Fierce, raw voices; tormented drifters; deals with the devil at the crossroads at midnight. In this extraordinary reconstruction of the origins of the Delta blues, historian Marybeth Hamilton demonstrates that the story as we know it is largely a myth. The idea of something called Delta blues only emerged in the mid-twentieth century, the culmination...