2013년 5월 2일 목요일 시크릿_Yoo Hoo Yoo Hoo by Secret@Mcountdown 2013.5.2 Mnet Mcountdown airs every Thursday 6pm(KST) Enjoy live-streaming on http://www.mnet.com Wanna know more about your favorite K-pop artist? - Subscribe http://www.youtube.com/mnet - Follow http://www.twitter.com/MnetMcountdown - Like http://www.fb.com/MnetMAMA - Visit http://global.mnet.com