Invisible files?

Hi, if I drag a folder on MusicBrainz often I see a lot of files with a red exclamation mark. I’m on Mac, I know that file like .example are hidden by default, but if I enable the visibility there are not hidden files into the folder. So, what are they?
Screenshot 2024-11-27 alle 16.36.31

macOS has the tendency to create hidden files for varying purposes. As for those specific ones I don’t know what they are for, though.