In what year was the album “FLY HIGH PROJECT #2 ‘옥탑방’” released by N.Flying?

In what year was the album “FLY HIGH PROJECT #2 ‘옥탑방’” released by N.Flying?: The album “FLY HIGH PROJECT #2 ‘옥탑방’” was released in 2019 by N.Flying, featuring 2 tracks.
What is the most successful song from the album “FLY HIGH PROJECT #2 ‘옥탑방’” by N.Flying?: “Winter Winter” is the biggest hit from the album “FLY HIGH PROJECT #2 ‘옥탑방’” by N.Flying.

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