Birth name Lee Seung-Chul (이승철)
Also known as RUI (in Japan)
Born: December 5, 1966 (age 46)
Genres: Soft rock, Pop rock
Occupation: Singer
Birthplace: Seoul, South Korea
Height: 1.70 m
Albums: Reflection Of Sound, The Livelong Day, More
Music group: Boohwal (1985 – 1989)
Years active: 1989–present (Korea)
2006–present (Japan)
Label: CJ E&M


Lee Seung Chul was the main vocal of Boohwal, a South Korean rock band, until 1989 when he parted with the band and released his first solo album, Don't Say Good-Bye (안녕이라고 말하지마). In 2005 his 7th album, The Livelong Day, won him Korean Music Awards for best male singer. He has been working for a judge in reality television series Superstar K.

Lee is also known for his song Girls Generation (소녀시대), which was covered and used as the group name in 2007 by a nine-member girl group Girls' Generation.

His latest song: