2AM (Korean: 투에이엠) is a South Korean boy group, that consisted of Jo Kwon, Lee Chang-min, Lim Seul-ong and Jeong Jinwoon. It was one of the two subgroups split from the eleven-member boy band One Day, the other being 2PM. They officially debuted on July 11, 2008, on KBS' Music Bank, performing the song "This Song". They won their first Mutizen at Inkigayo on February 7, 2010, with "Can't Let You Go Even If I Die".

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