Lylian

In October 2019, Lylian, then known by her birth name, Lee Do-hyun, appeared as a contestant in Channel A's variety television show Vocal Play : Campus Music Olympiad (otherwise also known as Vocal Play Season 2). She competed as a member of 'Ant', a team formed of college students from the Seoul Institute of the Arts. She was eventually eliminated from the contest along with her teammates with their final rank in 29th place.

Sometime in 2022 or earlier, she joined the agency COLOR WHALE and made her debut as a soloist singer with the digital single "Every Moment" on April 14, 2022. In June of 2022, she was a featured singer in the soundtrack of the television drama Going to You at a Speed of 493km, for which she released the song "Here You Are". Sometime later in 2022, she departed from COLOR WHALE and joined RND Company by 2023.