Empress Marie Therese, second wife of Emperor Franz II, devoted much of her life to music. She played piano and sang, compiled a large music library and supported professional musicians and composers. This comprehensive survey of the Empress as musician and patron is based upon John Rice's discovery and analysis of extensive unpublished material from her private collection. In this work Rice introduces readers to the musical and cultural worlds of the Viennese court at the end of the eighteenth century.