Norma: Duet
type: WorkPerformance
contralto: http://data.carnegiehall.org/names/23998
soprano: http://data.carnegiehall.org/names/8551
performer: http://data.carnegiehall.org/names/23998
performer: http://data.carnegiehall.org/names/8551
work performed: http://data.carnegiehall.org/works/62234