For some reason, I was compelled to work on this. Even though it meant skipping ahead a bit. And even as it took up most of my day yesterday, but otherwise it wouldn't be ready before the holiday. Anyway, just in time for Christmas, enjoy the soundtrack to part 13!
(The video isn't quite done processing on YouTube as I post this, but I'm going out for holiday-ish things in a few minutes. If it isn't ready when you read this, check back in half an hour or so. Thanks!)