Four members from SM Entertainment's rookie groups�EXO-K and EXO-M will be making their first appearance at the '2011 SBS Gayo Daejun'. SM Entertainment is planning to have a surprise performance by four members of EXO - KAI, LU HAN, TAO, and yet-to-be-introduced�CHEN - on December 29th during the '2011 SBS Gayo Daejun'. In particular, CHEN, who will be revealed for the first time through this stage, will showcase his superior vocal talents that surpasses the level of a 19-year-old. Because he will be the lead vocals for the group, many are anticipating this live introduction. Most recently, a group photo of the four members (above) through their official website as well as Korean, Chinese and international social networking platforms has been spiking international interest in this group. Although four members of EXO-K and EXO-M have been confirmed, the exact number of members still remains unknown, drawing even more curiosity from the general public. Source: Newsen via Nate