Lee Jae-jin (musician, born 1991)

This group debuted at the 2009 New Year concert "My First Dream" held at the JCB Hall in Tokyo, Japan on January 2, 2009.

This group was formed to help take up some singing time during their concerts, so that main vocalist, Lee Hongki, would not overstrain his voice.

Island's main vocalist Lee Hongki was busy filming a drama and guitarist Song Seung-hyun was involved in several variety shows.

In the sitcom, he played the role of Wang Sa-baek (Sim Mal-yeon's fourth son), and appeared regularly on the show.

In 2013 he was cast in a Korean production of High School Musical along with AOA member Choa.