Taeyeon is the leader and 1st main vocalist of the popular nine-member South Korean girl group, Girls' Generation.
Main article: Girls' Generation
Taeyeon has contributed to a couple of soundtracks as a solo artist, singing the theme song "Manyageh" ("만약에", "If") for the KBS2 drama Hong Gil Dong and "Deullinayo" ("들리나요", "Can You Hear Me") from the Beethoven Virus soundtrack. "If" became popular[clarification needed] on various online charts, around the same time "Baby Baby" was released, while "Deullinayo" received the YEPP Popularity award at the 2008 Golden Disk Awards.
She also sang "SarangInGulYo" ("사랑인걸요", "It is love") with Sunny for the drama Heading to the Ground, and the "S.E.O.U.L." song with members of Super Junior and Girls' Generation to promote their beloved country. She also sang the song for Caribbean Bay / "Cabi" with her fellow members Jessica, Seohyun, Tiffany and Yuri with 2PM.
She sang a duet song with her mentor The One, called "Like a Star" which was released on November 17, 2010. She also sang in the soundtrack of SBS's Athena:Goddess of War, with the song "I Love You". The song was released on 13 December 2010. The song took number 1 in some hit charts.
On January 31, 2011, Taeyeon sang a duet with Kim Bum Soo, titled "Different". The song also took number 1 not long after it was released.
She has also featured on Kangta's Album Eternity, singing 7989.