About Seohyun
Seo Ju-hyun, known professionally as Seohyun, is a South Korean singer, actress, and songwriter. She debuted as a member of girl group Girls' Generation in August 2007, which went on to become one of the best-selling artists in South Korea and one of South Korea's most widely known girl groups worldwide. Seohyun released her first extended play Don't Say No in 2017. She left SM Entertainment later that year, although she remains as a member of Girls' Generation.
Biography source:
Wikipedia
