This fall, the Spanish city of Seville will stage an outdoor production of Bizet’s Carmen. You opera buffs already see where this is going: the famous opera is set in Seville, and the city plans to stage it in the actual locations called for in the libretto, with the entire production (and the audience, naturally) picking itself up and changing locations between acts. The ambitious project is the feature attraction of the First Seville International Music Festival, which will also boast appearances by cellist Mstislav Rostropovich and the New York Philharmonic.