The opera awards have announced the 2019 nominees with multiple singers and companies competing for top prizes.   The nominees for Female Singer of the Year are Anna Caterina Antonacci, Daniela Barcellona, Sabine Devieilhe, Rosa Feola, Asmik Grigorian, and Pretty Yende.    Meanwhile, the category for Male Singer of the Year is headlined by Charles Castronovo who competes with Alex Esposito, Brandon Jovanovich, John Osborn, Xavier Sabata, and Georg Zeppenfeld.   {…}