David McVicar’s vivid production keeps the action moving in Verdi’s intense melodrama, which includes some of the composer’s most memorable music. Carmen Giannattasio, Patricia Racette, Angela Meade, Gwyn Hughes-Jones, Marco Berti, Franco Vassallo, and Alexey Markov take on leading roles, with a pair of star mezzos sharing the role of the gypsy Azucena: Stephanie Blythe and Dolora Zajick.