Wanna One Bae Jin Young, 'Sick Hearts ~'

group Wanna One Bae Jin Young attended Music Bank' rearsal held at the public hall of KBS New Building in Yeouido, Seoul on the morning of 7th.

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