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Taeyeon debuted with the girl group Girls' Generation, commonly known as SNSD. Formed in 2007 by SM Entertainment, the group consists of eight members: Taeyeon, Jessica, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, and Yoona. Girls' Generation has released numerous hit songs and albums, making them one of the most successful girl groups in South Korea.