Homage to The Sound of Music?
I wonder if a nod to the sight of Gestapo guards at the music festival in TSoM is behind the concert scene here where police surround the club's stage. It seems more than a coincidence to me. I love both movies and those respective scenes.
"You don't have a pot to p*ss in."
"Give me a pot. I'll fill it."
-Tin Men (1987)