F.T. Island, short for Five Treasure Island, is a five member South Korean pop/rock band. The members are Choi Jong Hun (guitar and keyboard), Lee Hong Ki (lead vocals) Lee Jae Jin (bass and vocals), Song Seung Hyun (guitar and vocals), and Choi Min Hwan (drums). Their debut song "Lovesick" topped the K-Pop charts for eight consecutive weeks. Oh Won Bin was a member of the band until the beginning of 2009. Their fan club is called Primadonna and their official fan club color is yellow.