Critically acclaimed funk-rock trio forever best known for the 1975 smash "Lady Marmalade." Read Full Biography. STREAM OR BUY: Active. 1970s - 2000s. Formed. 1971 in Philadelphia, PA. Genre. R&B, Pop/Rock. Styles. Disco, Funk, Soul, Contemporary Pop/Rock, Deep Soul. Group Members. Cindy Birdsong, Nona Hendryx, Patti LaBelle, Sarah Dash.