Kim Hyeong-seok

You Hee-yeol's Sketchbook is a Korean pop music program that is both a talk show and live music show. The host of this program is You Hee-yeol, also known as Toy, a one-man project band. This program has aired since April 24, 2009.

Competitors are given elaborate masks to wear in order to conceal their identity, thus removing factors such as popularity, career and age that could lead to prejudiced voting. In the first round, a pair of competitors sing the same song, while in the second and third rounds they each sing a solo song. After the First Generation, the winner of the Third Round goes on to challenge the Mask King, and is either eliminated or replaces the previous Mask King through live voting. The identities of the singers are not revealed unless they have been eliminated.

Mind Universe is made up of two episodes that share the same subject matter about a mind-uploaded artificial intelligence. Today Of Tomorrow is about a story of an old woman, meeting her deceased AI husband who has been mind-uploaded. Our Universe is an episode at a virtual online funeral of famous Korean composer Kim Hyung-suk and is about music, love, and family.