AppleScript for launching Music app with custom library

I have a very specific use case for the Music app on macOS, which actually works very well for me. However, it is not very convenient and seamless to use, which is why I would like to make life easier with some sort of Automation using AppleScript.

To get everyone on the same page: You can launch Music with a custom library by ⌥-clicking the app icon. You will be prompted to either create a new library, or select an existing one with Finder. For Apple Music, I am using a separate library (called "Apple Music") because I don't want it to get mixed up with my local, default ("Music") library.

The problem is: Switching libraries is VERY annoying because ⌥-clicking Music strangely works only about 10% of the time for me (it just opens the recently used library instead). Is there a way to quickly change the library Music is set to or directly open a specific library? In other words: Are there input parameters you can use with AppleScript to launch Music with a certain library?

I know this is very much an edge case, but maybe someone has played around with Music libraries before and can help me out.