One of the greatest labels of the seventies is Philadelphia International. Founding legends Gamble and Huff wrote and produced some of the most enduring Philly Soul classics ever. Learn which O'Jays #1 is now in the Grammy Hall of Fame, and which T.S.O.P hit was the theme to "Soul Train"? Dig groovy hits by McFadden and Whitehead, Lou Rawls, and the Three Degrees too.