Carolyn Abbate is Professor of Music at Harvard University and the author of Unsung Voices (1991) and In Search of Opera (2001). As well as about opera, she writes on philosophy, music as performance, ephemeral art, and film and sound technology. Her work has been translated into many languages. She is herself a translator, most recently of Vladimir Jankelevitch's La musique et l'ineffable, and has been involved in theatre, as a dramaturge and director. Roger Parker is Professor of Music at King's College, London, and the author of Leonora's Last Act (1997) and Remaking the Song (2006). He writes particularly Italian opera of the nineteenth century. He is founding co-editor of the Donizetti critical edition, published by Ricordi, and editor of The Oxford Illustrated History of Opera (1994).