Close Ur Mouth

"뭘봐 (Close Ur Mouth)" is the debut single of duo M&D (also known as Kim Heechul & Kim Jungmo) released on June 22, 2011 under SM Entertainment. The music video stars various artists including Miss A's Jia, Beast's (now known as Highlight) Yong JunHyung, Supreme Team and solo artist Simon Dominic, F.T Island's Choi Jonghoon and Lee HongKi and comedian Kim KyungJin.