A new production of Parsifal, Wagners huge, profound meditation on guilt, death and possible redemption, is always a remarkable event. This one, directed by Stephen Langridge, designed by Alison Chitty and conducted by Antonio Pappano, the creative team who brought Birtwistles brutal, beautiful Minotaur to the stage, is especially exciting. An extraordinary cast of Wagnerian singers come together: Heldentenor Simon ONeill, recently acclaimed for his Siegmund, sings Parsifal; the magnificent bass René Pape is Gurnemanz; Gerald Finley makes his role debut as Amfortas after a wonderful Hans Sachs at Glyndebourne, Willard White sings the sorcerer Klingsor, and versatile singer-actress Angela Denoke is an intriguing choice for Kundry.