Internet rabbit hole: a post here on RS in the food forum about chocolate in London had me looking for Zotter Chocolate in Austria, then a search for chocolatiers who sell it in Vienna, then a thread about Viennese chocolatiers in some other chocolate web forum, THEN to a map search of a particular Viennese bakery that was suggested, THEN a listing for Cafe Dommayer. (Dommayer is my family name, before it was Americanized) which led me to an entire Wikipedia article about Cafe Dommayer, entirely in German.
Using Google Translate, I learned there has been some sort of Dommayer establishment there since the early 1800s, including a casino and music hall where Strauss played. And then a song was written, a Wienerlied (a song genre which has its roots in Vienna, the capital of Austria. Traditional Viennese songs, known as Wienerlieder are centred on the theme of life in Vienna and are almost exclusively sung in Viennese (thank you wikipedia) which includes lyrics about Dommayer z'Haus and I found a link to the song on YouTube. We have a song to go with our cafe!
I'm sorry, this was just so fun to discover! Cafe Dommayer is right near Schönbrunn Palace, so I know where I'll be getting my afternoon coffee and pastry!
/end geek out