I saw a documentation on TV about the history of Austria around and after the World War II. There was a school class that sang the song “Heidenröslein”. It was a popular folk song by Heinrich Werner based on music from Franz Schubert and on a poem by Johann Wolfgang von Goethe.
I found a recording of “Das Meistersextett” a successor of the Comedian Harmonists from around 1934 and used the vocals to create a dance version of this song.
Video: