KBS 2TV Music Bank' rehearsal was held at the public hall of Yeouido KBS New Pavilion in Yeongdeungpo-gu, Seoul on the morning of November 16th.
On this day, TWICE (Nayeon, Jinyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chae Young, TZUYU), Nayeon and Dahyun attend the rehearsal.
About TWICE
Twice is a South Korean girl group formed by JYP Entertainment. The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu.
 Wikipedia