Rainbow Get Dark And Sexy In 'M! Countdown' Performance Of 'Black Swan'

Girl group Rainbow revealed their upgraded sexiness.

On Mnet music program "M! Countdown" aired on Feb. 26, Rainbow performed their new song "Black Swan."

On the stage, Rainbow members spilled out their sexy charm. Their dark yet mysterious concept caught much attention.

On "M! Countdown" on this day, Shinhwa, Niel, and Amber also performed.