The piece is regarded as one of the best examples of the “Bel Canto” style in which the drama is expressed through vocal lines of extraordinary beauty and grandeur that demand exceptional technical control.
Its most famous aria CASTA DIVA has been a showcase for many of opera's most acclaimed sopranos including Giuditta Pasta who created the role, Rosa Ponselle, Maria Callas, Joan Sutherland, Montserrat Caballé and Cecilia Bartoli. But the work is also noted for its powerful choral episodes and two magnificent duets for the two sopranos.