The only and the best performance boy band '2PM' will return with their first full album '1:59PM' after their huge success of single albums like as '10 out of 10', 'Only yoy', 'Again & again', and 'I hate you'. 2PM decide to name their first full album '1:59PM', and they believe in themselves for sure. The best composer in Asia 'Park JinYoung' produced this album with '2PM' members, and this album has everything about '2PM'. 'Park JinYoung' also composed the title song 'Heartbeat' and it's very new style of music with drum and full orchestra sound. '2PM' members put thier best effort to do the greatest performace with the song.