Franz Mesmer summers he lived on a splendid estate and became a patron of the arts. In 1768, when court intrigue prevented the performance of "La finta semplice" (K. 51), for which the twelve-year-old Wolfgang Amadeus Mozart had composed 500 pages of music, Mesmer is said to have arranged a performance in his garden of Mozart's "Bastien und Bastienne" (K. 50), a one-act opera, though Mozart's biographer Nissen found no proof that this performance actually took place. Mozart later immortalized his former patron by including a comedic reference to Mesmer in his opera "Così fan tutte". In 1774, Mesmer produced an "artificial
Ivana Fišer Institute orchestra. As a conductor, Fišer debuted in 1933 while directing the comic opera Bastien und Bastienne with Zagreb philharmonic orchestra. From 1939 to 1941, she led the Zagreb Red Cross orchestra. Until 1941, she also led the Osijek philharmonic orchestra. From 1947 to 1965, Fišer worked as a prompter at the Croatian National Theatre in Zagreb. Ivana Fišer Ivana Fišer (born Fischer; June 13, 1905 – September 7, 1967) was known Croatian Jewish conductor. Fišer was born in Zagreb on June 13, 1905 to a Jewish family of well-known Croatian architect Ignjat Fischer and his wife Helena (née Egersrodfer).