Taeyeon began working on a solo album in late 2014 , believing her " right time " had come . She previously was afraid of not being ready for a solo debut , but her eight-year career gave her enough experience to be " well-prepared " . The final product , an extended play titled '' I '' , was released in October 2015 . The EP peaked at number two on South Korea 's Gaon Album Chart . It became the sixteenth best-selling album of 2015 in South Korea , with sales of 119,576 copies . It additionally peaked atop the US '' Billboard '' World Albums . The commercial success of '' I '' , according to Yonhap News Agency , was the main contributor to SM Entertainment 's leading music sales during the fourth quarter of 2015 . The lead single , which features rapper Verbal Jint , peaked at number one on the Gaon Digital Chart and has sold over one million digital units . To accompany her solo release , she held a series of small concerts titled '' Taeyeon 's Very Special Day '' . Her concurrent reality show , OnStyle 's '' Daily Taeng9Cam '' , was the third most popular idol program of 2015 in South Korea . Taeyeon was also named Best Female Artist at the 2015 Mnet Asian Music Awards , and at the 2016 Golden Disk Awards
2015 Mnet Asian Music Awards
2015 Mnet Asian Music Awards
Taeyeon