I saw a clip of this on Attack of the Show and realized a majority of you would 'get a kick out of this' as they say. I did a forum search and Google search of this site and neither returned for "christmas trololo." As per my argument for full disclosure, I will describe this video:
It is a quite large group of children in choir uniform and random internet famed masks singing what I've been lead to believe is the "Trololo" song. It seems to have been professionally organized by a choir teacher for a small concert. It is creepy.
The Link.Edit: I love how my stuffty computer makes the video las like forget as it runs. At least the audio isn't skipping, I guess...