The OK Mozart International Festival, June 6-13, is a multi-day festival that brings professional orchestra musicians, concert artists and musical performances of international significance to Bartlesville, Okla. This year celebrates the musical bounty of Italy: Respighi’s “Pines of Rome,” Vivaldi’s “Four Seasons,” Rachmaninoff’s “Rhapsody on a Theme of Paganini” and performances of Mozart’s “Requiem” and “Don Giovanni.” Information and tickets are available on their website.