The whimsical letter still contains numerous news from Bonn's cultural life, but even in Bonn Burgmüller did not endure long. In the same year he moved to the Nationaltheater in Mainz. After the French occupation of the city in 1792 he went to Düsseldorf where he settled as a piano teacher. Here he met his pupil and later wife Therese von Zandt. When in October 1794 Düsseldorf was also occupied by the French, he lost sight of her again for many years.