Beginning in 1956 with “Uncloudy Day” on Chicago’s Vee Jay Record label and stretching into the early 1980s, the Staple Singers were one of the most influential acts in gospel, soul, and social protest music. Their signature songs such as “Uncloudy Day,” “Why Am I Treated So Bad,” “Respect Yourself” and “I’ll Take You There” are hailed as soul music masterpieces.