Bless the internet and YouTube for things we may never
otherwise have been able to see!  In the film "They Came
By Night" (1940) there appears a musical clock where a bugler
shows up cuckoo-clock-wise at 45:50 and again 47:27.  See
https://youtu.be/Mtklzx3QD44?t=2752 

So, my question: is this something the likes of which anyone
has actually seen, or is it purely a filmmaker's fantasy?

Lee Rothrock

 [ The bugler's voice in the cuckoo clock sounds like a reed,
 [ not a flue pipe.  -- Robbie