Mary Mary is the sisterly duo of Erica and Tina Atkins. The girls' parents were gospel singers, and before long the children were singing in their local church choir. Erica and Tina Atkins joined the Michael Matthews traveling gospel show "Mama I'm Sorry" in 1995. The duo signed a song publishing deal, and "Dance," appeared on the soundtrack to Dr. Doolittle in 1998. Their debut single, "Shackles (Praise You)," became a Top 10 R&B and Top 40 pop hit. Both Erica and Tina Atkins became mothers before their self-titled album appeared in 2005.