Martha: Duet
type: WorkPerformance
alto: http://data.carnegiehall.org/names/36601
soprano: http://data.carnegiehall.org/names/42104
performer: http://data.carnegiehall.org/names/36601
performer: http://data.carnegiehall.org/names/42104
work performed: http://data.carnegiehall.org/works/19020