HyunA was back on Music Core on the afternoon of February 27th as she performed her hit single, Change. It may have been some time since the single was released but with HyunA globetrotting all over the place for promotions with her 4minute members, it was nice to see her back on stage for some change. But unfortunately for everyone, this is her Music Core goodbye stage. http://www.youtube.com/watch?v=AXkYIt9rkkg Her 4minute members were not sitting idly as they were performing during the half-time show for the K-League opener between Ulsan Hyundai Horang-i and Gyeongnam FC at the Ulsan World Cup Stadium.