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.
Lion Heart (song) "Lion Heart" is a song performed by South Korean girl group Girls' Generation. It was released on August 18, 2015 as the second single from the group's fifth studio album "Lion Heart" by S.M. Entertainment.