▲ This photo, provided by Mystic Story, shows Moon Sua and Siyoon of K-pop girl group Billlie, in promotion of their unit digital single. “SNAP.” (PHOTO NOT FOR SALE) (Yonhap)

SEOUL, April 7 (Yonhap) -- Moon Sua and Siyoon of K-pop girl group Billlie will drop their unit digital single “SNAP” at 6 p.m. on Monday, their agency Mystic Story said.

“SNAP” features a fusion of deep drill bass and dark, minimalist rhythms with electronic pop synthesizer sounds. 

Moon Sua delivers a powerful presence through husky vocals and sharp rapping, while Siyoon showcases both smooth vocal skills and dynamic performance.

The track tells a personal story of overcoming challenges on the journey of growth, with rapper Sokodomo contributing a featured verse.

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