This is more of a bring back an old feature - but here it goes:
When you go to 'Your Library' > 'Music' > and then select any of the 'Playlists', 'Artists' or 'Albums', you can no longer filter results quickly using the alphabet filter bar. You have to scroll all the way down - through hundreds of results - just to get to something you want further down the alphabet. This makes no sense at all, and is contrary to all current UI/UX protocols. Please bring back the ability to filter searches using an alphabet filter - thank you.