KBS 2TV Music Bank' rehearsal was held at the public hall of KBS New Pavilion in Yeouido, Yeongdeungpo-gu, Seoul on the morning of November 30th.
Red Velvet (Wendy, Irene, Sleigh, Joy and Yerry) attends the day.
About Red Velvet
Red Velvet is a South Korean girl group formed and managed by SM Entertainment. They originally debuted on August 1, 2014, with the single "Happiness" with the four-member line-up of Irene, Seulgi, Wendy and Joy.
 Wikipedia