Helen Radice, on her harp-driven site Twang Twang Twang, quotes W. H. Auden: "Every high C accurately struck demolishes the theory that we are the irresponsible puppets of fate or chance." Genau. When I hear Deborah Voigt soaring up effortlessly to A in "O hehrstes Wunder" in Die Walküre, I think, this is going to change the world somehow.