SALZBURG, Austria - British composer Thomas Ades blurs the lines between cinema and opera in his edgy new work "The Exterminating Angel" based on director Luis Bunuel's film of the same name about guests trapped by an invisible force at an upper-crust dinner party. The opera, which had its premiere at the Salzburg Festival on…Read more Ades’s searing “Exterminating Angel”, based on film, is opera as cinema