Pittsburgh Opera presents Verdi's "Falstaff" April 28th through May 3rd at the Benedum Center. It's the final production of their 2025-2026 Season, as well as Christopher Hahn's final opera as General Director. WQED-FM's Anna Singer spoke with Marianne Cornetti about her role as Mistress Quickly; how the role fits her voice perfectly, although it's still a difficult sing; and how Verdi is her favorite opera composer.