K-pop stars disguise themselves as idol trainees 

To promote their new music offering and boast of their vocal brillance, GHOST9 members headed to Seoul's Daehangno, the mecca of plays and theater performances, and sang in front of random people on the street after disguising themselves as idol trainees. Then, they invited these people to their concert held at a small theater where they revealed their true identity.
How did the audience react?
If you want to find out, please check out our video!
#GHOST9 #고스트나인 #아이돌