It’s been a busy operatic week, with a nearly great concert performance of Parsifal in Birmingham on Sunday (reviewed by Anna Picard in last week’s Spectator), Carmen at the Coliseum on Wednesday, Donizetti’s Poliuto at Glyndebourne on Thursday and Carmen, also at Glyndebourne, on Saturday. A trajectory that Nietzsche would have approved of, moving from brooding northern transfiguration to sunlit, brilliant southern violence and destruction.