Euphonious is Cube's newest group, a duo group comprising of Julia Chen and Melody Liu, mentored by Yong Junhyung. The pair takes part in writing the lyrics, composing, and taking an active interest in learning how to produce their music as well. Their debut mini-album titled Euphoria has three songs all written, produced and sung by the girls.

Cheonmi has a hard time trusting people genuinely. When troublesome Jackson Wang comes strolling into her life she struggles on deciding what to do. Jackson Wang is about having fun and dragging anyone along with him. Cheonmi is about keeping herself safe, even if it means blocking people out. When he's introduced to seemingly timid Cheonmi he has a hard time trying to control himself. The trouble that follows has both wonde