Sung Si Kyung and music director Kang Seung Won guest-featured on an episode of KBS 2TV‘s ‘Yoo Hee Yeol’s Sketchbook‘, that aired March 9th. Ballad singer Sung Si Kyung, who offered big laughs with his Avatar parody on the Christmas special of ‘Sketchbook’ was asked, “Did your parody affect your image as a ballad singer?” Read more on Allkpop.