Anna Netrebko has withdrawn from the opening of the Royal Opera House season in London. She recognized not being able to sing the role of Norma: « As I have begun to prepare the role, I have come to the unfortunate conclusion my voice has evolved in a different direction. This is something I could not have anticipated when Maestro Pappano and I planned this project four years ago, as we singers have to make decisions about roles and projects several years in advance. »