Kim Tae-yeon, known mononymously as Taeyeon, is a South Korean singer. 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 the most widely known K-pop groups worldwide. She has since participated in other SM Entertainment projects, including Girls' Generation-TTS, SM the Ballad, Girls' Generation-Oh!GG, and the supergroup Got the Beat.