Screeching Shower

[Emiat]

I am in an apartment and when I or one of the other neighbors run the shower it makes this horrifying screech, but not every time. The management company says a plumber can come Dec 16. Can I fix this on my own? Im sleep with earplugs in when the neighbor showers at 5am. Video attached.

Thanks,
So much for a relaxing shower!

 

[havasu]

I was waiting for a butcher knife and Alfred Hitchcock to appear!
(You youngin's will need to look that one up!)
I'm curious if your valves can be manipulated to stop that squeal?
Also, if you remove that shower head, does the noise continue?
Have you had recent plumbing work done? Could it be sediment in the shower head?