You Hee-yeol is a South Korean singer-songwriter, radio disk jockey, and the host of You Hee-yeol's Sketchbook. He is the founder of the record label Antenna Music and the sole member of the project band Toy.

You Hee-yeol's Sketchbook is a South Korean talk show and live music television program airing from April 24, 2009, until July 22, 2022. It was hosted by You Hee-yeol, also known as his one-man band, Toy. The program has aired since April 24, 2009.