Fly to the sky member Hwanhee collaborates with soloist Zia to have have a duet for their song. "Falling In Love". The song gain more attention from viewers even though its just a teaser featuring actor Yeon Woo Jin. The song is all about a struggling musician who finds himself falling in love with a woman he met by fate. Hwanhee and Zia showcase their amazing voices to capture every listeners heart. The two got a chemistry combining their sweet voices as if listeners could get back to time when they fall in love for the first time.