Royal Birmingham Conservatoire SUMMER OPERA DOUBLE BILL Charpentier   Les Arts Florissants Offenbach   Mesdames de la Halle conducted by Jeffrey Skidmore directed by Stuart Barker Warwick’s summer opera house presents a contrasting double bill with Marc-Antoine Charpentier’s baroque classic followed by Jacques Offenbach’s one act comedy written in the same year as his ever popular Orpheus in the Underworld. In a romp around a Parisian market, we meet an ostentatious drum major and three comely market vendors with surprisingly deep voices. With…