Also known as Y:SY
Lee Seo-yeon (, born January 22, 2000), also known as Y:SY, is a South Korean singer. She is best known as a former member of the girl group Fromis 9. Lee departed from the group after her contract with Pledis Entertainment expired in 2024. In 2025, she signed with H1ghr Music to start her career as a solo musician.
5 total works indexed
· 1988 · cited 94,860x
· 2003 · cited 64,876x
· 2020 · cited 34,522x
· 1951 · cited 29,372x
· 1993 · cited 29,197x
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Lee Seo-yeon (, born January 22, 2000), also known as Y:SY, is a South Korean singer. She is best known as a former member of the girl group Fromis 9. Lee departed from the group after her contract with Pledis Entertainment expired in 2024. In 2025, she signed with H1ghr Music to start her career as a solo musician.
==Early life and education== Lee was born in Seoul, South Korea, and raised in Incheon, South Korea. She attended the School of Performing Arts Seoul before dropping out. At the age of 10, she joined YG Entertainment as a trainee. In 2011, she appeared in the music video for "Knock Out" by GD & TOP, marking her first public appearance in the K-pop industry. She was one of the trainees under YG Entertainment's pre-debut project "Future 2NE1". On July 1, 2012, YG Entertainment released dance and individual vocal performance videos of her through its official YouTube channel, introducing her as part of the trainee lineup. She left the company before joining Idol School.
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