Their album Red Light was released in 2014 and also reached #1 in Korea. The group S.M. The Ballad released the albums Miss You in 2010 and Breath in 2014 which both reached #1 in Korea. As an actress Krystal Jung has starred in the film Unexpected Love and in the TV series High Kick: Revenge of the Short Legged, The Heirs, My Lovely Girl, The Bride of Habaek, Prison Playbook, Player, and more. She is the sister of Jessica Jung.