(GREAT BARRINGTON, Mass.) – Berkshire Bach will offer a triple-play of Bach’s Brandenburg Concertos as well as works by Vivaldi and Handel in concerts in Northampton, Great Barrington and Troy, N.Y., on December 30 and 31, 2012, and January 1, 2013, respectively. On the program will be Antonio Vivaldi’s Concerto for two horns, two oboes…