Mary Mary is a female American urban contemporary gospel duo composed of sisters Erica Atkins-Campbell and Trecina Atkins-Campbell.[1] Formed in 1998, Mary Mary was launched into mainstream recognition following the release of their best-selling debut album, Thankful (2000), which contained the hit single "Shackles (Praise You)". Their followup album Incredible (2002), reached number one on the Top Gospel Albums chart. Their self-titled third album, Mary Mary (2005), which contains themes the public interpreted as a channel to the group's experience, contains the worldwide hits "Heaven", "The Real Party", and "Yesterday".
After meeting producer Warryn Campbell, a publishing deal was reached with music conglomerate EMI. This led to a series of their songs being on movie soundtracks; they wrote "Dance" and performed it with Robin S. for the soundtrack to the 1998 film Dr. Dolittle, they performed "Let Go, Let God" for The Prince of Egypt, and several of their songs were recorded by 702. However, the sister's profile really started to rise in the gospel industry when their songs "Time To Change" and "Yeah" were recorded by Yolanda Adams on Mountain High... Valley Low. During this time, Mary Mary as a musical entity formed.

The duo was subsequently signed to Columbia Records and decided to perform under the name Mary Mary, honoring Mary, the mother of Jesus, and Mary Magdalene.[6] They were the first gospel act to record for the industry giant Columbia Records since Tramaine Hawkins in the mid-1990s.
On October 21, 2008, they released their fifth studio album, The Sound.[9][10] The lead single, "Get Up," was released digitally via ITunes on July 15, 2008. Mary Mary's The Sound achieved great success in the mainstream market and sold over 37,000 copies in its first week, making it their best charting album to date. It debuted at number seven on the Billboard 200, number two on the US R&B chart, and topped both gospel and country music charts. The album held the number one position on the Billboard's Gospel Album Chart for over six months since its release.[11] Warryn Campbell produced the album and collaborated with many professionals: Kierra Sheard, David Banner, Marvin Winans, Daryl Coley, Andrae Crouch, The Rance Allen Group, Dorinda Clark Cole, Joe Ligon, Walter Hawkins, Tramaine Hawkins, and Karen Clark Sheard. In spring 2009, "God in Me" achieved crossover success by reaching number five on the R&B/Hip-Hop Chart and number one on the Hot Dance Club Play.
In 2009, Mary Mary began recording their sixth studio album. In April 2010, they released a book entitled, Be U via Simon & Schuster.[12] In the fall of 2010, they released "Walking" as the lead single from their forthcoming album. Originally titled OMG, the project was renamed Something Big after the success of R&B singer Usher's hit single, "OMG" in 2010. Their album was released on March 29, 2011.