Philip Glass, who is recognised as one of the leading proponents of minimalism in the world today, has written over twenty-five operas, a total achieved by hardly any composer since the days of Rossini, Donizetti and Verdi. His 1991 work Orphée is the final addition to English National Opera’s current season of operas exploring the Orpheus myth, and is based on Jean Cocteau’s eponymous film of 1950. It is, in the words of the production’s director Netia Jones,...