Lee Seung-cheol X Park Bo-gum, co-starred today (Thursday 20) with You Hee-yeol's Sketchbook'...to present the joint stage

You Hee-yeol's Sketchbook' Lee Seung-cheol Park Bo-gum Starring Lee Seung-cheol In singing, Park Bo-gum is a piano accompaniment

About You Hee-yeol's Sketchbook

You Hee-yeol's Sketchbook is a South Korean talk show and live music television program. It is hosted by You Hee-yeol, also known as his one-man band, Toy. The program has aired since April 24, 2009.  Wikipedia