What is this South Korean-Chinese boy group formed by S.M. Entertainment in 2011 initially with several members and broke up a year later that released the song "Mama" in 2012?
Mama (Exo song) "Mama" is a song by South Korean-Chinese boy bands Exo-K and Exo-M. It served as their debut single and title track from their debut record "Mama" (2012). Available in both Korean and Mandarin, the song was digitally released on April 8, 2012, by S.M. Entertainment.
1TYM 1TYM (Korean: 원타임, pronounced as "One Time") was a four-member South Korean hip hop group. They are Oh Jinhwan, Park Hong-jun (also known as Teddy Park), Song Baekyoung, and Im Taebin (also known as Danny).