How to reinstall Music.app in Mac OS 10.15 Catalina?

Question

iTunes

Describe the problem for a long time, so I will not, and off topic. But I determined that on the zero Music application everything works fine (I reinstalled Mac OS and everything is fine there, I rolled back from Time Machine, the problem is the same). Why not just leave a new axle? Too long and a lot of things to restore as it was, I do not want to.
You just need to reset the program Music.app or reinstall it. I don't know how to do it. I tried to remove all sorts of libraries, settings - not that. Does not help. And the program itself cannot be removed from the Program. And through the terminal, too, does not want to. How to be? How to throw zero Contents into Programs?