I've been using SomaFM on my house Sonos system and obviously audio is a lot better through my home theater stuff ... anyway, reason for sharing: I just found out they have an AppleTV app (also Roku, Firestick, etc) so this makes things really easy to browse channels!

https://somafm.com/listen/players.html

The electronic music bits have always been super good, but anyway, for the Christmas season there's a "Christmas Lounge" and a "Christmas Soul" channel for a bit more retro variety from the usual playlists

It's all free, though you can give them a donation if you want.

A lot of the electronic channels are pretty chill and make great night time background music.