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.
L (South Korean singer) Kim Myung-soo (born March 13, 1992), better known by his stage name L, is a South Korean singer and actor. He is a member of the boy band Infinite and its sub-group Infinite F.