Duo Concertant for Violin and Viola (unspecified)
type: WorkPerformance
viola: http://data.carnegiehall.org/names/52133
violin: http://data.carnegiehall.org/names/25538
performer: http://data.carnegiehall.org/names/25538
performer: http://data.carnegiehall.org/names/52133
work performed: http://data.carnegiehall.org/works/65590