A rock band from Seoul. They had performed in the indie scene before 1997 and became major with their first released single ‘Hey Hey Hey. They have released nine full-length albums, three unofficial albums, two original soundtrack singles, one original soundtrack EP (which was released as a digital single), and one concert album. Their ninth full-length album, 'goodbye, grief’, was released on October 14, 2013.

The band is praised for their arrangements, and singer Kim Yoon-ah is often praised for her singing abilities and lyrics. Their drummer, Goo Tae-hoon has run a major live club in Korea, ‘Soundholic’, since 2003; as well as the record label of the same name.