MAMA is sung by EXO-M. Exo (stylized as EXO /ˌɛks ˈəʊ/ eks-oh; Korean: 엑소) is a South Korean-Chinese boy band produced by S.M. Entertainment. Formed in 2012 in Seoul, South Korea, Exo consists of twelve members, who are separated into two subgroups, Exo-K and Exo-M, promoting their music in both South Korea and China. Their name was taken from exoplanet, a term referring to planets outside of the Solar System. Their debut single Mama was released on April 8, 2012, followed by the release of their debut EP Mama on April 9, 2012.
Exo-K and Exo-M released their debut single, "Mama" on April 8 followed by an EP, Mama, on April 9. On April 8, Exo-K made their debut performance on South Korea's music program The Music Trend, while Exo-M performed at China's 12th Yinyue Fengyun Bang Awards on the same day. A day after release, "Mama" reached number one on various Chinese online retailers and music charts. Exo-M's album reached number two on China's Sina Album Chart, number five on South Korea's Gaon Album Chart and at number twelve on the Billboard World Albums Chart. Exo-K's album peaked at number one on the Gaon Album Chart and at number eight on the Billboard World Albums Chart. Exo-M's Mama music video got to number one on Chinese streaming websites and Exo-K's version reached to number seven on YouTube's Global Chart.