In what year was the album “Why” released by TAEYEON ?

In what year was the album “Why” released by TAEYEON ?: The album “Why” was released in 2016 by TAEYEON , featuring 7 tracks.
What is the most successful song from the album “Why” by TAEYEON ?: “Why” is the biggest hit from the album “Why” by TAEYEON .

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