On February 22, 2012, Chanyeol was officially introduced as one of the twelve members of the original formation of the South Korean-Chinese group EXO. The group debuted on April 8 of the same year with the release of extended play "MAMA". In April 2012, he participated in the music video for the song "Twinkle", debut single from the first sub-unit of Girls 'Generation,Girls' Generation-TTS. In October 2013, Chanyeol joined the cast of SBS's "Law of the Jungle" reality show during filming in Micronesia. He also composed and recorded a soundtrack titled "Last Hunter" for the show.