The Beelzebubs, the nationally known a cappella group at Tufts University, present their winter show, “Cars 4 the Beelzebus,” with a special guest performance by the Northeastern University’s Treble On Huntington. The Bubs promise “a show full of high energy, smooth harmonies, and mediocre dancing.” Free admission; no tickets required. Doors open at 7:30 p.m.