‘Orphee’ an opera worth repeating

Pittsburgh Post-Gazette: Here’s an old music joke: Knock knock. Who’s there? Knock knock. Who’s there? Knock knock. Who’s there? Philip Glass.
The composer’s reputation for repetition is deserved in the case of “Orphee,” his opera based on Jean Cocteau’s 1950 film. The movie’s script was itself inspired by the ancient myth of Orpheus and served as the source material for the opera’s French libretto. Musical repetition naturally extends from the film’s obsession with mirrors.