Listen to Norma: "Casta diva" online. Norma: "Casta diva" is an Italian language song and is sung by Maria Callas, Antonino Votto and Orchestra Del Teatro Alla Scala Di Milano. Norma: "Casta diva", from the album Best of Opera, was released in the year 2015. The duration of the song is 7:14. Download Italian songs online from JioSaavn.