In what year was the album “Limbo - Single” released by DEAN?

In what year was the album “Limbo - Single” released by DEAN?: The album “Limbo - Single” was released in 2017 by DEAN, featuring 2 tracks.
What is the most successful song from the album “Limbo - Single” by DEAN?: “불청객 (The Unknown Guest)” is the biggest hit from the album “Limbo - Single” by DEAN.

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