Stars of disco era Sister Sledge reappear with gospel album.

DESPITE changing from a four piece to a duo, veteran Philadelphia disco act Sister Sledge will release a new album in the coming months. The act behind million selling hits such as "We Are Family" and "Lost In Music" will follow up last year's Christmas album and a recent release of recreations of their old hits with a gospel project, featuring Joni and Debbie Sledge.