Eunseo Ko was born and raised in South Korea. She is currently working as s film composer, orchestrator and arranger, and now is a graduate student for her doctor's degree in Sangmyung University.

She got the Bronze Prize in the 1st Machang International Animation Music Competition, has chosen at one of the finalist in Berlin International Film Scoring Competition in 2023, Indie Film Music Contest 2023, FMC 2023, ScoreLive Competition 2024. She is actively working with film directors, orchestras and library music production.