2AM

• 2AM is a South Korean four-member ballad Boy Band under JYP Entertainment. The members are Jinwoon, Jo Kwon, Seulong, 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 their debut song "This Song". They won their first Mutizen at Inkigayo on February 7, 2010 with ''Can't Let You Go Even If I Die''.

• Along with the members of 2PM, 2AM appeared on the documentary Hot Blood that was aired on Mnet, documented their rigorous training program of their pre-debut days. Changmin was the only member of One Day to not appear in the documentary because he was serving in the military at that time. Initially, Jinwoon was eliminated on Hot Blood, but he ended up in 2AM due to Daehun's withdrawal from JYPE. Jo Kwon trained for 2567 days, 10 days past 7 years after joining JYPE.

• Jo Kwon (조권), born August 28, 1989 (age 21), is the leader and the vocalist of the group. He was discovered by Park Jin Young through SBS variety show, 영재 육성 프로젝트 99%의 도전 (99% Challenge Project) in year 2001.

• Lee Changmin (이창민), commonly known as Changmin, is the main vocalist and rapper of the group. He is born on May 1, 1986 (age 24) and is one of the few idols to have completed his military service prior to debut.
• Im Seulong (임슬옹), commonly known as Seulong, is the vocalist of the group. He is born on May 11, 1987 (age 23).
• Jung Jinwoon (정진운), commonly known as Jinwoon, is the vocalist and rapper of the group. Born on May 2, 1991 (age 19), he is the youngest member in the group.