Mikeru On Korean Music Today

2AM is a South Korean four-member boy band under JYP Entertainment. The members are Jinwoon, Jokwon (the leader), Seulong, and Changmin. 2AM is one of the two subgroups branched out from the eleven-member (before Jaebeom's departure) boy band One Day, the other being 2PM. They officially debuted on July 11, 2008 on KBS's Music Bank, performing their debut song "이노래" (This Song).