Boy group 2PM has definitely been gaining attention again for their latest single, but now they're saying goodbye with Tired of Waiting and Heartbeat on KBS Music Bank! 2PM is definitely 2009's biggest success story even though they hit quite a rough patch towards the end. The 17th will mark the end of their promotion until their April album comeback, but for now just enjoy watching the boys perform! Tired of Waiting http://www.youtube.com/watch?v=FrrNpz4LylA Heartbeat http://www.youtube.com/watch?v=mqWEM7OLIow