Based in Knoxville, O Youth describe their style as Art Punk or Doom Folk, but I think that's more of an inside joke than a genre description as I'm finding everything to be very accessible Indie Folk Rock, Indie Folk Pop, and some Alt Country. Their originals are great, but they breathe surprising life into the covers, too (and, more or less, doing them straight). This is the quintessential example of a group enjoying what they're doing so much that you can't help but enjoy it, too.
As the title of "The Seventh Day of Christmas" might imply, O Youth has been at this for a while. So catch up on the first six "days" (from 2012-2017) and, come Christmas, you'll have 12 new packages to open. For you political animals, there's "When Trump Repeals Christmas" on the 2016 collection. And O Youth will always have a place in my holiday music hall of fame for covering the Coca Cola jingle "The Holidays Are Coming" on their 2017 set. I still have to go back and check the earlier "Days", myself. It's all waiting for you at Bandcamp.