Serviceable 'Tosca' signals business as usual at Washington National Opera
When Puccini's "Tosca" was scheduled for the start of the 2011-12 season, the Washington National Opera didn't know that the work would mark the start of the company's new incarnation as a partner, or arm, of the Kennedy Center. But Saturday night's "Tosca" proved a fitting symbol of continuity, familiarity and tradition. After months of backstage drama, the merger has gone through, and Mrs. Eugene B. Casey, the dono…