Overview: Anna Netrebko stars in Bellini's bel canto opera "I Puritani" as a bride-to-be whose wedding day is disrupted when her betrothed (Eric Cutler) helps the condemned Queen Enrichetta (Maria Zifchak) escape from the Roundheads (Oliver Cromwell supporters during the English Civil War of the 1640s). Sir Riccardo Forth: Franco Vassallo. Sir Giorgio Walton: John Relyea. Lord Walton: Valerian Ruminski. Sir Bruno Robertson: Eduardo Valdes.