Manrico - Giuseppe Di Stefano (tenor) Leonora - Maria Callas (soprano) Count di Luna - Rolando Panerai (baritone) Azucena - Fedora Barbieri (mezzo-soprano) Ferrando - Nicola Zaccaria (bass) Inez - Luisa Villa (mezzo-soprano) Ruiz - Renato Ercolani (tenor) An Old Gypsy - Giulio Mauri (bass) A Messenger - Renato Ercolani (tenor) Chorus and Orchestra of La Scala, Milan (Norberto Mola, chorus master) Herbert von Karajan, conductor