The members of 2PM started when Korean musician Park Jin-young formed an eleven-member band known as One Day. Eventually the band was split into 2PM, and a similar but independent group known as 2AM. 2PM debuted with the song "10 Jeom Manjeome 10 Jeom" (10점 만점에 10점, lit. "10 Points Out of 10 Points"), which showcased their acrobatic dance styles. They achieved their first number 1 single with "Again & Again". Both singles featured on their first studio album, The First Album 1:59PM, released in 2009.
Record label: JYP Entertainment
Years active: 2008
Facebook: 2PM Fan Page