Listen to Norma: Atto II - "Introduzione" online. Norma: Atto II - "Introduzione" is an Italian language song and is sung by Maria Callas, Orchestra Of The Royal Opera House, Covent Garden, Vittorio Gui, Chorus Of The Royal Opera House and Covent Garden. Norma: Atto II - "Introduzione", from the album Bellini: Norma, was released in the year 2011. The duration of the song is 3:15. Download Italian songs online from JioSaavn.