In what year was the album “Sting” released by STELLAR (K-pop)?

In what year was the album “Sting” released by STELLAR (K-pop)?: The album “Sting” was released in 2016 by STELLAR (K-pop), featuring 5 tracks.
What is the most successful song from the album “Sting” by STELLAR (K-pop)?: “떨려요 (Vibrato)” is the biggest hit from the album “Sting” by STELLAR (K-pop).

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