The Coastal Chordsmen will perform at The Trumbull Library, 33 Quality St., on Friday, Dec. 4, at 2 p.m. In the spirit of the Barden Bellas, The Coastal Chordsmen will perform in true acapella style. For all ages. A men’s barbershop chorus, based in Trumbull, The Coastal Chordsmen entertain audiences all over New England. The public is invited to experience their unique style of high-energy barbershop harmony. Free and open to the public. Registration requested through the library’s website www.trumbullct- library.org or by calling 203-452-5197.