John Tyrrell John Tyrrell is Professor of Music at Cardiff University. His books include Czech Opera, Janácek's Operas and editions of the memoirs of Janácek's widow and Janácek's correspondence with Kamila Stösslová . He is co-author of the standard catalogue of Janácek's works and, with Sir Charles Mackerras, he edited Janácek's opera Jenufa. In 2002 he was awarded an honorary doctorate by the Masaryk University of Brno for his work on Janácek and Czech music. Read More Read Less