MomoLand Yeon Woo, 'Sweet Hearts'

Music Bank rehearsal was held at the opening hall of the Yeouido-dong KBS new building in Yeongdeungpo-gu, Seoul on the morning of the 21st.

Group MomoLand Yeon Woo poses

About Music Bank

Music Bank is a South Korean music program which airs every Friday at 17:00 KST on KBS2. As of 2015, the show is also broadcast in more than a hundred countries through KBS World.  Wikipedia