2AM

2AM
is a four-member boy-band from Seoul,South Korea. They are managed by Park Jin-Young of JYP entertainment and produces albums under Cube Entertainment. The members are Jinwoon, Jokwon (the leader), Seoulong, and Changmin. 2AM is one of the two subgroups branched out from the eleven-member boy band One Day, the other being 2PM. They officially debuted on July 11,2008 on KBS's Music Bank, performing the song "This Song".

Along with the members of 2PM, 2AM appeared on the documentary Hot Blood Men, which documented their rigorous training program. Changmin was the only member of One Day to not appear in the documentary. 2AM's leader, Jokwon, holds the record as the longest trainee in JYP Entertainment, having completed 2567 days of training. 2AM made their debut performance on KBS Music Bank performing "This Song," which talks about a man who has nothing left to offer his love except for one song. 2AM's first single "This Song" came out on and debuts on KBS Music Bank on July 11, 2008. This single contains the title song, "This Song," "Not Because," and the follow-up song, "What Do I Do."