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.
Beatwin Beatwin (Hangul: 비트윈; pronounced Between; stylized as BEATWIN) is a South Korean boy group formed by Elen Entertainment (formerly Heavenly Star Content) in Seoul, South Korea. The group currently consists of three members: Sunhyeok, Youngjo, and Jungha. They debuted on January 6, 2014 with the single "She's My Girl". Their fans are called "Trophy".