They Are There!
type: WorkPerformance
mezzo soprano: http://data.carnegiehall.org/names/22949
violin: http://data.carnegiehall.org/names/35333
performer: http://data.carnegiehall.org/names/22949
performer: http://data.carnegiehall.org/names/35333
work performed: http://data.carnegiehall.org/works/37774