The Same Song from ‘The Producers’
There’s a scene where Hedley Lamarr and his men ride into the fake town set up by the Sheriff and Waco Kid near the end of the film, and there’s a short moment where the camera cuts away. The camera turns to Lilly von Schtupp and some German soldiers who are singing a drinking song.

Source: YouTube
That same song was what Gene Wilder and Zero Mostel sing with Kenneth Mars during ‘The Producers.’
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