Lee Kyoung Seo, known simply as Kyoung Seo, is a South Korean singer. She graduated from Daeyoung High School and later obtained bachelor’s degrees in Applied Music from Ahyeon Industrial Information School and in Practical Music from the Seoul Institute of the Arts. When she was in high school, she appeared as one of the singers trying to be selected by Kim Jong Kook in season 1 of "Fantastic Duo". She was eventually selected and performed the song "Letter" with him. She was also a contestant in "Vocal Play Season 2" where she ended up in 2nd place. She made her official debut in 2020 with a remake of the song "Stars in the Night Sky" and she performed on TV during KBS "Open Concert" in early 2021.
(Source: Korean = Namu Wiki || Translation = MyDramaList)