Talented vocalists such as Sung Si Kyung, Fly to the Sky, Navi, and Gummy have been confirmed to appear on the Christmas special airing of KBS' 'Yoo Hee Yeol's Sketchbook'. 

A representative of the program revealed that the artists have already participated in the filming for the episode, which took place on December 9, at KBS New Performance Venue. In addition, the artists and MC Yoo Hee Yeol were reported to have dressed up in holiday themed outfits, heightening the anticipation for the special performance. Sung Si Kyung and Yoo Hee Yeol have prepared a special collaboration stage as well.

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Meanwhile, the Christmas edition of 'Yoo Hee Yeol's Sketchbook' will air on December 26.