Wolfgang Amadeus Mozart rapidly maturing composer. Wolfgang met Josef Mysliveček and Giovanni Battista Martini in Bologna, and was accepted as a member of the famous Accademia Filarmonica. In Rome, he heard Gregorio Allegri's "Miserere" twice in performance, in the Sistine Chapel, and wrote it out from memory, thus producing the first unauthorized copy of this closely guarded property of the Vatican. In Milan, Mozart wrote the opera "Mitridate, re di Ponto" (1770), which was performed with success. This led to further opera commissions. He returned with his father twice to Milan (August–December 1771; October 1772 – March 1773) for the composition and premieres
Wolfgang Amadeus Mozart and artist Joseph Lange. Mozart's interest shifted to the third Weber daughter, Constanze. The courtship did not go entirely smoothly; surviving correspondence indicates that Mozart and Constanze briefly separated in April 1782. Mozart faced a very difficult task in getting his father's permission for the marriage. The couple were finally married on 4 August 1782 in St. Stephen's Cathedral, the day before his father's consent arrived in the mail. The couple had six children, of whom only two survived infancy: In the course of 1782 and 1783, Mozart became intimately acquainted with the work of Johann Sebastian Bach and George