After making a comeback to the music industry by releasing their latest album Y, the boys of MBLAQ made their comeback performances this week through Mnet's M! Countdown and Music Bank. The boys of MBLAQ's next stop was today's MBC Music Core as they performed their latest title track Y. With the catchy tunes and an impressive choreography, the boys' performance was terrific. Check out their performance below! http://www.youtube.com/watch?v=Ybgr55sV3cU