To lie flat on the back
type: WorkPerformance
piano: http://data.carnegiehall.org/names/90770
soprano: http://data.carnegiehall.org/names/87911
performer: http://data.carnegiehall.org/names/87911
performer: http://data.carnegiehall.org/names/90770
work performed: http://data.carnegiehall.org/works/89991