Surprise a cappella! Men's voices fill Southside

Video: Raw footage of Mason men's a cappella group GMUnit singing on the bottom level of Southside. (Kevin Loker, via smartphone)

Members of George Mason University's men's a cappella group GMUnit surprised Mason Dining's Denise Ammaccapane on the bottom level of Southside Friday night. After singing "Brown Eyed Girl" and "Kiss the Girl," the crew headed upstairs to sing in the dining hall itself.

GMUnit is one of three School of Music contemporary vocal ensembles performing this Sunday, Nov. 14 at Harris Theatre. The Gershwin revue group Times Square Singers and vocal jazz ensemble SoundCheque will also perform.

Admission is free, and the show begins at 7 p.m.