In what year was the album “Bittersweet” released by Baek A Yeon?

In what year was the album “Bittersweet” released by Baek A Yeon?: The album “Bittersweet” was released in 2017 by Baek A Yeon, featuring 4 tracks.
What is the most successful song from the album “Bittersweet” by Baek A Yeon?: “The Last Of You” is the biggest hit from the album “Bittersweet” by Baek A Yeon.

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