This opera becomes a battle of the divas in its great second act, with Sutherland, as Mary Stuart, pitted against the jealous, paranoid, and vengeful Elizabeth I (Tourangeau). There is an intensely dramatic confrontation in which insults are violently exchanged between the powerful monarch and her imprisoned but still regal rival to the throne. Mary wins the battle of insults, but this is a dangerous victory over one who has the power of life and death. Elizabeth orders Mary's execution and Act III becomes a spectacle of pathos and horror. Sutherland's usual style is more attuned to pathos than to the swapping of insults, but she rises splendidly to the challenges of Act II and she has a splendid supporting cast. --Joe McLellan