On today's episode of Mnet's M! Countdown, the boys of 2AM performed their hit track I Did Wrong. With the song's catchy tunes and the boys' impressive choreography, their performance was awesome. Check out their performance below. http://www.youtube.com/watch?v=OoBdNeERPF0 Because 2PM had their comeback performance today, it looks like we'll see One Day promoting at the same time for a while.