Robert Johnson is the subject of the most famous myth about the blues: he allegedly sold his soul at the crossroads in exchange for his incredible talent, and this deal led to his death at age 27. But the actual story of his life remains unknown save for a few inaccurate anecdotes. Up Jumped the Devil is the result of over 50 years of research. Gayle Dean Wardlow has been interviewing people who knew Robert Johnson since the early 1960s, and...