The Metropolitan Opera has announced a cast change for its revival of “Orfeo ed Euridice.” The company said that “For all performances of Gluck’s ‘Orfeo ed Euridice,’ the conductor will be J. David Jackson.” He will replace  Christian Curnyn, who was originally announced. Jackson made his Met debut in 2008 leading “Hansel and Gretel.” He has since conducted “Porgy and {…}