Absent, yet present
type: WorkPerformance
piano: http://data.carnegiehall.org/names/25017
soprano: http://data.carnegiehall.org/names/7573
performer: http://data.carnegiehall.org/names/25017
performer: http://data.carnegiehall.org/names/7573
work performed: http://data.carnegiehall.org/works/18117