The Fw189 was basically a reconnaissance aircraft and for sure never mounted Schrage Musik. Most carried two machine guns but the later Fw189A-4 carried two MG-FF cannon for use in the ground support role.

SM was used by the frontline Nachtjagd aircraft in the West such as the Bf110G-4, He219 and Ju88G.

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson