Timing is the fourth Korean mini-album by the leader and main rapper of what boyband?
Timing (EP): Timing is Kim Hyun-joong's fourth Korean mini-album, which was released on July 11, 2014 under KeyEast. 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.
SS501