(Credit: Carnegie Hall official website) Carnegie Hall has announced the launch of an on-demand video network entitled Carnegie Hall+ that features recorded performances of classical artists that have appeared at the New York’s venue. The platform will include operas from the Salzburger Festspiele and the Bayreuther Festspiele’s 1979-80 staging of Wagner’s “Der Ring des Nibelungen” that was directed by Patrice {…}