Hit the Plus Sign (+) at the top to open a new tab
The left menu drawer thing should come out. Select the filter you want to use there (Christmas, I'm guessing).
Pin that tab.
Now that tab contains your library filtered for just Christmas music (or whatever filter you chose).
I do this for Classical vs everything else. One tab is my library filtered with all genres except classical. One is my library filtered to just classical. Works like a charm.
A smile is happiness you'll find right under your nose.