Theatrix, a barbershop quartet that hails from the Worcester area, will perform at Starry Starry Night in Orange on New Year’s Eve. Shows will be held at the Universalist Church, 31 North Main St., at 7 and 9 p.m. Theatrix got their start appearing in a local production of My Fair Lady and decided to keep singing together after the show closed. Since then they have appeared in multiple theatrical productions together and separately from Music Man to Light in the Piazza.