There are, at least, three artists known as 2AM.
1) 2AM is a South Korean group formed by Jinwoon, Seulong, Changmin and Jo Kwon. They are one of the two subgroups branched out from the eleven-member (before Jay Park's departure) One Day, the other being 2PM. They debuted under JYP Entertainment on July 11, 2008 with "This Song". On October 26th, 2010, they released their first album titled "Saint O'Clock".
Between 2015 and 2017 all the members parted ways with JYP but confirmed the group won't be disbanding.
2) A band from Dundee (Scotland) who’s basis for music is to create music they like the sound of rather than copying any of of their influences. The name stems from the hour you clamber home at and your so tired that a mellowed out sound is whats needed.
3) A band from Northern Virginia. In the summer of 2003, Matthew Scarborough, a singer/songwriter from Northern Virginia, compiled a group of talented fellow musicians in order to record a solo E.P. of some original material. The four quickly recognized their musical chemistry; 2AM (under the name of MSB at this point) was born. They recorded their debut album, Optical Delusions, in January of 2005. The current lineup of 2AM looks forward to continued songwriting, recording, and performing, beginning with a tour around the east coast during the summer of 2006. The band features Matthew Scarborough (vocals / keyboards), Albert Dwan (vocals / guitar), Ben Kuebrich (vocals / bass), and Jim Mattingly (vocals / drums).
4. A British band from Liverpool composed of : Dave Lloyd - Vocals and Mark Thomas - Guitar. They released one album, "When Every Second Counts", in 1987.
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