Silly Silky (실리실키), formerly known as YESEO (예서), is a South Korean independent electronic producer and an indie-pop artist.

In July 2016, under her stage name YESEO (예서), she debuted with the single “Let It All Go,” an indie-pop song. Later, in December of the same year, she made her first comeback with “Bud.”

In 2017 she released her first EP, No City For Love, her first album Million Things, which she produced, wrote, and composed herself, and Unkind. “Silhouette," a track from the album Million Things, was nominated for Best Dance & Electronic Song at the 15th KMA.

In 2018, she released the singles “춤 (Dance),” “Privacy,” her second album Damn Rules and her first OST for the K-drama Voice 2. “Honey, Don’t Kill My Vibe,”, a track from the album Damn Rules, won Best Dance & Electronic Song at the 16th KMA.

In 2022, YESEO changed her stage name to Silly Silky. Following the name change, she released SILLY : Episode 1 and SILKY : Episode 2.