Timing is the fourth Korean mini-album by the leader and main rapper of what boyband?
Kim Hyun-joong Kim Hyun-joong (; born June 6, 1986) is a South Korean actor and singer, and the leader and main rapper of boyband SS501.
Shin Hye-sung Jung Pil-kyo (born November 27, 1979), better known by his stage name Shin Hye-sung, is a South Korean singer-songwriter. He is best known as a member of the South Korean boy group Shinhwa.