Wolfgang Amadeus Mozart and the Catholic Church be my duty to convince the world of this miracle, it is so now, when people are ridiculing whatever is called a miracle and denying all miracles ... But because this miracle is too evident and consequently not to be denied, they want to suppress it. They refuse to let God have the honor. As a teenager, Mozart went on tours of Italy, accompanied by his father. During the first of these, Leopold and Wolfgang visited Rome (1770), where Wolfgang was awarded the Order of the Golden Spur, a form of honorary knighthood, by Pope Clement XIV. The papal patent
Wolfgang Amadeus Mozart Theme from Mozart's Opera "Die Zauberflöte" (1822), Frédéric Chopin's Variations on "Là ci darem la mano" from "Don Giovanni" (1827), and Max Reger's Variations and Fugue on a Theme by Mozart (1914), based on the variation theme in the piano sonata K. 331; Pyotr Ilyich Tchaikovsky wrote his Orchestral Suite No. 4 in G, "Mozartiana" (1887), as a tribute to Mozart. For unambiguous identification of works by Mozart, a "Köchel catalogue number" is used. This is a unique number assigned, in regular chronological order, to every one of his known works. A work is referenced by the abbreviation "K." or