Yoo Young-jin (Hangul: ์ ์์ง; Hanja: ๅ่ฑๆฏ) is a singer-songwriter and producer for various SM Entertainment artists. He has composed and written songs for H.O.T, S.E.S., BoA, ์ ํ, ๋๋ฐฉ์ ๊ธฐ, ์ฒ์์งํฌ The Grace, Super Junior, ์๋ ์๋, SHINee and f(x). Read more on Last.fm