Every year I like to post the public domain music I find that can be used without worrying about the copyright Grinch™. I remember that one organization didn't seem to care and the parody Walking Around in Women's Underwear (a spoof of Walking Around in a Winter Wonderland) even made its way into the mix. I found a ton of Christmas Music at https://www.music.af.mil/Multimedia/AF- ... ain-Music/ and while it is not all public domain (like the parody Santanooga Choo Choo) the list clearly states what songs are. You can easily find enough music to last your average train ride without getting repetitive.