Il trovatore: Duet (unspecified)
type: WorkPerformance
unspecified voice: http://data.carnegiehall.org/names/34001
unspecified voice: http://data.carnegiehall.org/names/57072
performer: http://data.carnegiehall.org/names/34001
performer: http://data.carnegiehall.org/names/57072
work performed: http://data.carnegiehall.org/works/9892