After releasing their full single album and MV of their title track Push Push, the girls of SISTAR were able to go through their first week of debut performances on Music Bank and Music Core last week. Because they did not visit Mnet's M! Countdown last week, their visit today was their debut performance. The girls performed Here We Come and Push Push, check out their awesome debut performance below! http://www.youtube.com/watch?v=_Bc1tH3xWWQ http://www.youtube.com/watch?v=E08RV28PhTQ