MIDDLEBURY — On Saturday, Feb. 1, a new production of Gershwin’s great American opera, “Porgy and Bess,” will be broadcast live from the Metropolitan Opera in New York to the screen at Town Hall Theater in Middlebury. This classic explores the relationships among members of a close-knit community in 1920s South Carolina. The score is infused with timeless melodies that have become standards of the Great American Songbook. Scott Morrison will give a pre-show talk in the Byers Studio downstairs at 12:15 p.m., with refreshments. The broadcast begins at 1 p.m. Tickets are $24/$10 students, and are available at townhalltheater.org, by calling (802) 382-9222, at the THT box office or at the door an hour before showtime.