WQXR, the Metropolitan Opera, and WNYC Studios introduce Aria Code, a new podcast “that pulls back the curtain on the most famous arias in opera history, hosted by Rhiannon Giddens.” The premiere episode focuses on La traviata with commentary by Diana Damrau, Cori Ellison and Dr Brooke Magnanti, forensic scientist and columnist, also known as former call girl blogger Belle de Jour.