Deekay wrote for what South Korean girl group formed by S.M. Entertainment?
Red Velvet (band) Red Velvet (Hangul: 레드벨벳) is a South Korean girl group formed by S.M. Entertainment. The group debuted on August 1, 2014, with their digital single "Happiness" and with four members: Irene, Seulgi, Wendy and Joy. In March 2015, Red Velvet added a fifth member, Yeri, to the group.
Cosmic Girls Cosmic Girls (Hangul: 우주소녀 ; RR: "Uju Sonyeo " ; ), also known as WJSN, is a South Korean-Chinese girl group formed by Starship Entertainment and Yuehua Entertainment which debuted in 2016. Their first extended play "Would You Like?" was released on February 25, 2016.