Taeyeon

Taeyeon, Girls' Generation's lead vocalist, has built a solo career that dwarfs most full groups, with her 2015 ballad "I" reaching number one across all major Korean music charts and accumulating over 100 million streams. Her wide vocal range and emotional control make her the benchmark for ballad performance. Since her solo debut, Taeyeon has released six studio albums, each setting first-day streaming records—her 2022 release "INVU" broke the record for a female soloist with 700,000 unique listeners on its debut day. This consistency cements her as a standard-bearer, though her genre range is narrower than IU's.