Johann Strauss I
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".