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
Jacobowsky und der Oberst (opera) Jacobowsky und der Oberst (opera) Jacobowsky und der Oberst, Op. 49, ("Jacobovsky and the Colonel") is an opera in four acts by Giselher Klebe who also wrote the libretto based on the 1944 play of the by Franz Werfel. It premiered on 2 November 1965 at the Hamburg State Opera which had commissioned the work. Klebe dedicated it to the then director of the Staatsoper, Rolf Liebermann. Time and place: 1940, Paris, St. Cyrill, Bayonne and Saint-Jean-de-Luz The first American performance was on 27 June 1967 at the Metropolitan Opera, New York, using the same cast, conducted by Matthias Kuntzsch.