The first notable teacher with whom Beethoven studied was Christian Gottlieb Neefe, the Court organist in Bonn. Showing great promise as a performer, Beethoven was just eleven years old when he became assistant court organist to Neefe. In addition to the performance duties with Neefe, Beethoven also became a continuo player in the Bonn opera. Under Neefe's tutelage, Beethoven published his first composition,
Variations on a March by Dressler, in 1783. Beethoven displayed an ability to improvise with little difficulty. This natural ability was one not taught by his teacher and was one for which Beethoven developed a reputation. Beethoven's continued abilities and displays of talent led the Archbishop of Cologne to sponsor a trip to Vienna for Beethoven to study with the master of that day, Mozart.
Beethoven left for Vienna and spent a short two months with Mozart as a pupil. When Beethoven learned of his mother's death, he returned to Bonn, where he would begin the transition from pupil to teacher. Beethoven continued his performances in Bonn, playing viola with the theater as well as continuing his duties as assistant court organist. However, Beethoven was now having to cover expenses at home and was fortunate to have made some very profitable contacts, most notably the home of Madame von Breuning. The widow of a powerful chancellor, von Breuning took Beethoven in as a teacher to her children. Beethoven was able to meet a Viennese transplant through von Breuning. The transplant, Count Ferdinand von Waldstein, was respectful of the talent Beethoven displayed in the von Breuning home and hired him to compose music for a ballet under the Count's name.
Waldstein was also instrumental in arranging for Beethoven to compose pieces in honor of Emperor Joseph II, whose death in 1790 prompted musical memorials from several courts, including the one in Bonn. In honor of the Emperor, Beethoven was invited by friends of Waldstein to compose a musical tribute for the fallen "Musical King" and his brother and successor, Emperor Leopold II. Unfortunately, the music was not performed due to the difficulty of performance by the players. The music was produced years later and declared authentic Beethoven by Johannes Brahms in the late nineteenth century. Although unperformed, the music was an important acheivement in Beethoven's life. One person who was allowed to review the score appreciated the talent required for the composition. The man, on his way to London through Bonn, invited Beethoven to study with him upon his return. The man was Mozart's counterpart of the great classical composition duo, Franz Josef Haydn.
When Haydn returned to the European continent after a time in London, Beethoven departed Bonn with Haydn to commence his study. The year was 1792, a year after Mozart's death. Beethoven went with Haydn to Vienna, where the competetion was more fierce and the void of Mozart's death was still being felt by the Viennese.