In what year was the album “I” released by 태연 (TAEYEON)?

In what year was the album “I” released by 태연 (TAEYEON)?: The album “I” was released in 2015 by 태연 (TAEYEON), featuring 6 tracks.
What is the most successful song from the album “I” by 태연 (TAEYEON)?: “I” is the biggest hit from the album “I” by 태연 (TAEYEON).

Other artists of Contemporary R&B