Mnet M Countdown' live broadcast preview was held at cj ENM Center in Sangam-dong, Mapo-gu, Seoul on the afternoon of October 4th.
Soyou attended the day.
Lee Jaeha
About Soyou
Kang Ji-hyun, known professionally as Soyou, is a South Korean singer. She is best known as a former member of the South Korean girl group Sistar.
 Wikipedia