Kim Kwangseok, had time to sing his masterpiece back to Medley!?Gems such as the time to listen his masterpieces!▶ broadcasters: JTBC▶ Program name: Hidden Singer 2▶ Homepage: http://enter.jtbc.joins.com/hiddensin...▶ Official Twitter: / jtbclove ▶ Official Facebook: / jtbclove