In 2015 Kopitz revealed additional sources about Beethoven's romance to Röckel along with the well-known piano piece. It shows that she was also a close friend of Anna Milder-Hauptmann and lived along with her and her brother Joseph August during the Theater an der Wien. Within a letter to Röckel, https://and87530.wikiap.com/856446/top_guidelines_of_appentwicklung