At 6 PM on December 15 MNET's M-countdown broadcast live from the CJ E&M Center in Mapo-gu, Seoul. 

While artists Hyuna and JS's duet "Troublemaker" took the number 1 spot, Kpop boy band Boyfriend's rocked the stage during the show.

Along with Boyfriend, T-ara, Hyuna and JS, and SNSD were among many stars who performed during the countdown.