Mnet's M! Countdown is back with another episode of great performances and musical treats. Besides the usual stages, rookie girl group CHI CHI made their debut, B2ST's Junhyung appeared on stage for Wheesung's performance, and�CNBLUE finally made their comeback. It was a battle between K-Will, SG Wannabe and Wheesung for the #1 spot on 'M! Countdown' today, but in the end, it was Wheesung who grabbed the win tonight. Congratulations to Wheesung on the win! == Charting songs from this week. == Other performers who stood on stage this evening included Big Bang, Maya, LPG, Lee Hyun, G.NA, 5dolls, Lee Jung, Girl's Day, Kan Mi Youn, ZE:A, M to M, and Han Groo.