(Credit: Johan Person) “Les vêpres siciliennes” is one of Verdi’s few substantive forays into the bloated dimensions of Meyerbeerian grand opera, and less frequently performed than its iconic companions “Aida” and “Don Carlo.” David Pountney’s new production of Verdi’s 1855 story of revolution, love and duty, created in collaboration with the Theater Bonn, was hotly anticipated as it marked the {…}