In what year was the album “SUM(ME:R)” released by PENTAGON?

In what year was the album “SUM(ME:R)” released by PENTAGON?: The album “SUM(ME:R)” was released in 2019 by PENTAGON, featuring 4 tracks.
What is the most successful song from the album “SUM(ME:R)” by PENTAGON?: “Humph!” is the biggest hit from the album “SUM(ME:R)” by PENTAGON.

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