The "apply to all subfolders" would only work on the subfolders that have the same folder template as the main folder. If they do not, then it will not change them.
Since you do not want "all folders" to be this way and only the Music folder and it's subfolders, give this a try to see of it may get you there:
- Reset folder views back to default to restore all folders back to their default views.
- Make sure that the main Music folder and all of it's subfolders have the Music folder template by setting this for the main Music folder and checking the Also apply this template to all subfolders box.
- Make the folder view changes that you want in the Main Music folder, then use Apply to all folders to have it applied to all folders with a Music folder template.