Dozens of emerging artists from New England and beyond will showcase their talents over the Labor Day Weekend during the annual Campfire. Festival at Club Passim, the legendary Harvard Square listening room in Cambridge, MA. Now marking its 20th year, the event also will be live streamed via Concert Window beginning Friday, Aug. 31, at 6 p.m. and extending through Monday, Sept. 3, at 10:30p.m. [To continue reading this article, click on the headline.]