Y:SY (singer)

Error creating thumbnail: /bin/bash: /usr/bin/convert: No such file or directory Error code: 127

Y:SY promoting GOODIES (2026)

Y:SY is a South Korean artist under H1GHR Music. She is a former member of the Korean pop girl group fromis_9.

Profile

• Stage Name: Y:SY
• Birth Name: Lee Seoyeon (이서연)
• Nickname: Sleepy Head
• Birthdate: January 22, 2000 (2000-01-22)
• Birthplace: Seoul, South Korea
• Blood Type: A
• Height: 158cm
• Weight: 47kg
• MBTI: ISTJ ISTP
• Family: Parents, older brothers ^{(b.1990, b.1992)}
• Education:
  • Seoul Janggok Elementary School (Graduated)
  • Majeon Middle School (Transferred)
  • SungSan Middle School (Graduated)
  • School of Performing Arts Seoul (Dept. of Practical Music – Dropped Out)
• Groups:
  • fromis_9 (2017–2024)
• Labels:
  • YG Entertainment (2010–2016)
  • Stone Music Entertainment (2017–2021)
  • Pledis Entertainment (2021–2024)
  • H1GHR Music (2025–)

Discography

Mini-Albums

• [2026.09.09] GOODIES

Digital Singles

• [2024.03.12] Urin Majimak Bominga Bwa (우린 마지막 봄인가 봐; I Guess It's Our Last Spring) (Lee Seoyeon)
• [2025.11.17] NAKED
• [2026.07.16] Webtoon 'Jaehon Hwanghu' OST Part 2 (웹툰 '재혼 황후')

Filmography

Television

Year	Title		Network	Role	Notes
	RR	Hangul
2017	Idol Hakgyo	아이돌 학교	Mnet	Contestant	Survival show that formed fromis_9 – Ranked #7

Music Videos

Year	Artist	Song		Notes
		RR	Hangul
2010	GD&TOP	Ppeogigayo	뻑이가요

Trivia

• She was a YG Entertainment trainee from 2011 to 2016.

External Links

• Official Instagram
• Official YouTube
• Official TikTok