Double the Diva MONTE CARLO    What do you get when you combine the sublime dramatics of Diana Vishneva and the stylish eloquence of Bernice Coppieters? Jean-Christophe Maillot’s Switch, which comes to the Salle Garnier in Monte Carlo Dec. 18–19. Maillot chose a cinematic score by Danny Elfman for the work, which features longtime Les […]