Rock and Roll Hall of Famers The O’Jays were at the forefront of Seventies soul music. Racking up a lengthy string of modern R&B classics, including “Back Stabbers,” “Love Train,” “For the Love of Money,” “I Love Music” and “Use Ta Be My Girl,” they helped put the “Philly Soul” sound (so named for Philadelphia-based producers, Kenny Gamble and Leon Huff) on the map. The O’Jays were the backbone of Gamble and Huff’s Philadelphia International label, which released some of the greatest and most influential Seventies records.