This year the festival has reached a historical benchmark. To celebrate their first “Lustrum of Musical Excellence,” the 2011 Festival will present the most expansive and varied program in their history, with solo performances, chamber ensembles and concerti. Their array of world-class artists includes the violinist Alissa Margulis, classical guitarist Marlon Titre, Avery Fisher Career Grant winner Yura Lee and maestro Harold Martina.