Best known for their work with Chic in the late '70s, Sister Sledge reached the height of their popularity during the disco era but had been recording since the early '70s and were still active in the late '90s. Sister Sledge's first national hit came in 1974, "Love, Don't You Go Through No Changes on Me." It wasn't until 1979, when Chic leaders Nile Rodgers and Bernard Edwards produced We Are Family, that Sister Sledge really exploded commercially. "He's the Greatest Dancer" and We Are Family's title song both soared to number one on the R&B charts, and the latter (a number two pop smash) was adopted as a theme by the World Series-winning Pittsburgh Pirates.