Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Henrietta "Jetty" Treffz (née Chalupetzky; 1 July 1818, Alsergrund 8 April 1878, Hietzing) was best known as the first wife of Johann Strauss II and a well-known mezzo-soprano appearing in England in 1849 to great acclaim. Henrietta Chalupetzky was the only child of a Viennese goldsmith and studied music in Vienna, adopting her mother's maiden name, Treffz, for professional purposes. Her career took her around Austria, as well as Germany and France, but it was in England that she first appeared with Johann Strauss I in concerts that would bring her numerous accolades and felicitations. The Musical World, published in London on 5 May 1849, noted her talents: "mezzo-soprano voice of beautiful quality and remarkable for freshness and equality of tone throughout the register".
Johann Strauss II, Mezzo-soprano, Johann Strauss I