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.
I.O.I discography The discography of South Korean girl group I.O.I consists of two extended plays and six singles/single albums. Formed by CJ E&M in 2016 through the survival show "Produce 101", I.O.I debuted in May 2016 with the release of their first EP "Chrysalis".