V.O.S stands for Voice of Soul, and the group live up to their name with robust vocals that quiver with emotion. Unlike many of their mid-'00s vocal group peers like SG Wannabe (who they've collaborated with both as a group and individually), their music leans more strongly towards R&B, with steady drumbeats accompanying their vocal theatrics and beautiful harmonising. Of course, the singers are no strangers to more traditional piano-based ballads, and they deliver them with just as much intensity.