Looking for specific keyboard shortcut

Hi,

I'm looking for a specific shortcut in iTunes on the Mac that I haven't been able to figure out - I'm sure I'm missing something completely obvious... maybe one of you iTunes/Apple Music experts can help me out 🙂

When I jump to the search field and start typing, I see two tabs at the top, named "My Library" and "All Apple Music". The default differs depending on where I am in the app - and I'd love to know if there's a way to switch between the two tabs with a shortcut. It's kind of a bummer that I have to use the mouse to make that switch... does anybody know the shortcut I'm looking for?

Thanks, Anna