“A storm of boos greeted the opening operas at both the Salzburg and the Bayreuth Festivals last weekend. High ticket prices — as much as 360 euros ($437) — in Salzburg and stratospheric expectations in Bayreuth didn’t help. When all was said and done, when singers and conductors had been politely applauded, the direction teams marched onto stage and the audiences responded with the verbal equivalent of the rotten tomato.”