UmYull (음율) is a South Korean co-ed indie duo consisting of vocalist Choi Unyul
and producer Choi Sunyul. Formed under CREPE SOUND, the duo debuted on March 16,
2022, with the digital single "Courage of Kindness". Their music has
incorporated city pop, R&B, indie, soul, rock, and K-pop, while their music
videos frequently use anime-inspired visuals. They released the EP The Theory of
Happiness on June 7, 2023, followed by singles including "Wa;volution"(2023) and
"Love Innocence" (2024). Their first studio album, Fantasy Tale, was released on
July 30, 2024, and was followed by th...