Exo is a South Korean-Chinese K-pop boy band produced by S.M. Entertainment. Formed in 2011 in Seoul, South Korea, EXO comprises 12 members separated into two subgroups, EXO-K and EXO-M, performing music in Korean and Mandarin, respectively. EXO-K comprises Suho, Baekhyun, Chanyeol, D.O, Kai and Sehun. EXO-M comprises Kris, Xiumin, Lu Han, Lay, Chen and Tao.
EXO's debut single, "Mama", was released in April 2012. The single was a moderate success; EXO-M's version topped mainland Chinese music charts after only one day of release, and EXO-K's "Mama" music video reached to number seven on YouTube's Global Chart. The group's two albums, the 2012 debut EP Mama and the 2013 comeback studio album XOXO, were major commercial successes, selling over 1.5 million units in total worldwide. With XOXO, EXO became the youngest boy band to win Album of the Year at the Mnet Asian Music Awards, and the fastest-selling K-pop artist in twelve years. The lead singles off XOXO, "Wolf" and "Growl," were hits, landing first place trophies on music shows from all three of Korea's major free-to-air broadcast stations. The latter also peaked at number three on Billboard's Korea K-Pop Hot 100 chart.