FTISLAND (Korean: 에프티 아일랜드), short for Five Treasure Island, is a five-member South Korean rock band. The members are Choi Jong-hoon (guitar and keyboard), Lee Hongki (lead vocals) Lee Jae jin (bass and vocals), Song Seung-hyun (guitar and vocals; replacing Oh Won-bin in 2009), and Choi Min-hwan (drums).
Their debut album, titled "Cheerful Sensibility", was the sixth best-selling album in 2007. Their debut song "Lovesick" topped the K-Pop charts for eight consecutive weeks
F.T. Island's first album, Cheerful Sensibility, was scheduled to be released commercially in May 2007. Prior to that the members appeared on the show "Wanna be my girlfriend?" (Korean: 두근두근 여친만들기) on the Korean television channel Mnet. The band also performed on stage live at Rolling Hall and held their first official showcase at Live House Melon-AX, Gwangjang-dong in Seoul on May 27, 2007.
On June 7, 2007 the group performed their debut song Love Sick on the music television program M!Countdown; their debut album, Cheerful Sensibility, was released on the same day.
Th album combined 13 songs that were loosely divided into two parts, “Emotional Chapter” and “F.T. Island Chapter”, according to the genre of the songs.The “Emotional Chapter” consists of rock ballads, while the "F.T. Island Chapter" was produced by the Japanese composers who worked with the Japanese band SMAP and is composed of a variety of pop rock songs.
Selling over 79,000 copies in 2007, it was the sixth best-selling album of the year. The album was re-released on December 3, 2007, titled The Refreshment, with three extra songs, a photobook, a stack of photocards, and a mixing program called Music 2.0, which allows one to adjust the levels of the instruments and vocals. This edition sold 25,724 copies in December 2007.
Members: main vocal 이홍기 (Lee Hongki), guitarist/leader 최종훈 (Choi Jonghun), bassist 이재진 (Lee Jaejin), drummer 최민환 (Choi Minhwan), guitarist/subvocal 송승현 (Song Seunghyun)
Former members: guitarist/subvocal 오원빈 (Oh Wonbin)