This is an apolitical forum for discussions on the Axis nations and related topics hosted by the Axis History Factbook in cooperation with Christian Ankerstjerne’s Panzerworld and Christoph Awender's WW2 day by day.
Founded in 1999.
That is a wartime parody (of the refrain) of the popular Viennese song of the same name. The original lyrics were written by Franz Prager and the music was composed by Hans von Frankowski (Op. 117).
The refrain originally began with the lyrics "Erst wann's aus wird sein, mit aner Musi' und mit'n Wein...", which was changed in the parody version to "Erst wann's aus wird sein, mit'n Churchill und mit'n Chamberlain..." (etc).
One can even find the (original) song title on the facade of the building where the composer died in the bombing at the end of the war (which speaks enough about the popularity of the original song):
Parodies were often made during wars (including political wars/campaigns). It's always much easier getting your message through when using an already popular melody Then the people would have to think of your words too when singing the popular melody, willingly or not. That's just how the brain works. A melody reminds of text (and vice versa). Just remember the Nazi/Communist "song war" in the early 1930s and how many songs used by the German Communists were re-written by the Nazis.