Opera soared under Francesca Zambello’s ‘rocket ship phase’ By TARA BARNWELL • Special to www.AllOTSEGO.com Glimmerglass Festival loses its leader at the end of its 2022 festival season when the visionary Francesca Zambello steps down after a transformative 12-year run at the helm. “I first came to the festival in 1997 and directed Iphigene en Tauride, she said. “I fell in love with the region and the festival. Since becoming the general and artistic director, every season has been enjoyable,…