As mentioned, Philly Soul became a staple of 1970s R&B with such artists as Gamble & Huff, The O'Jays, Teddy Pendergrass, Harold Melvin and The Delfonics. The female-singing group, Labelle, lead by Patti LaBelle, had a #1 Hot 100 hit with "Lady Marmalade" in 1974. This song was covered in 2001 by Christina Aguilera and Pink (singer) (both Pennsylvania natives), with Mya and Lil' Kim. This cover also was #1 on the Billboard Hot 100. In 1972, Billy Paul had a No. 1 hit with "Me and Mrs. Jones".