TAEYEON, the leader of Girls' Generation, has long been regarded as one of the top female vocalists in K-pop, with a voice that's both delicate and powerful. After a few years of featuring on drama soundtracks and duets with ballad singers like Kim Bum Soo, she debuted as a proper soloist in 2015 with “I,” an inspirational ballad with an alt-rock flavor distinct from Girls' Generation's pop sound. On other singles, she ventures into EDM and jazz, all with confident, soaring vocals that express a wide emotional range.