A Trololo Holiday Greeting

Here's a new one for you. I'm going to guess that you might be familiar with Eduard Khil, otherwise known as the Trololo (that's pronounced Tro-Lo-Lo) Man from YouTube. He's this Russian fellow who sings this song, the only words to which seem to be Tro Lo Lo. And he also appears to be very pleased with his own act while he does it. Take a gander.

Yeah, so I think that we can all agree that it's pretty flipping weird. Could it get any weirder? Oddly enough, just when you think that it can't, it absolutely can! I really don't know what to make of this, but maybe you'll have some ideas for me. This is the Gifford Children's Choir from Racine, Washington. All it says on YouTube is "Please accept this singing Christmas card from us to you. We hope it brings a smile to your face. Ho Ho Ho, Merry Christmas!" That doesn't tell me a thing! What does it mean?! Why are they all wearing masks like they're in Sliptknot or something?! Why are they "singing" that song?! (Is it really singing if all you do is say "Tro" and "Lo" in various keys with different emphasises? Emphasese? Emphasii?) It's completely without splick. That is to say that it's inexplicable. Watch and see.