Due to a schedule conflict with a pro baseball game that ran late last week,�the October 29th's�'Music Core' was broadcast�today. Korea's 'Madonna' Kim Wan Sun made her comeback with the support of B2ST's Junhyung last week. Her addictive dance track, "Be Quiet", was co-produced by Shinsadong Tiger and Junhyung himself. Kim Wan Sun's collaboration with Junhyung brought in a new wave of fans for her, thanks to their flawless blend of talents and her fierce charisma. It's almost hard to believe that she's 20 years older than Junhyung! Check out her comeback below!