In what year was the album “Bisang: Quantum Leap” released by X1 (K-pop)?

In what year was the album “Bisang: Quantum Leap” released by X1 (K-pop)?: The album “Bisang: Quantum Leap” was released in 2019 by X1 (K-pop), featuring 6 tracks.
What is the most successful song from the album “Bisang: Quantum Leap” by X1 (K-pop)?: “FLASH” is the biggest hit from the album “Bisang: Quantum Leap” by X1 (K-pop).

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