Gladys Knight & The Pips

Steeped in the gospel tradition like so many early R&B groups, Gladys Knight & the Pips topped the Billboard R&B chart for the first time in 1961 with "Every Beat of My Heart" and later in the decade developed into one of Motown's most dependable acts, responsible for 11 Top Ten R&B hits from 1966 through 1972, including "I Heard It Through the G...