I'm late to this party, but just want to add words of appreciation, Iceblossom! I've been listening to Christmas music all evening, even though everyone went home, all the decorations are put away, and the fruitcake is long gone. And Leonf, you put a big smile on my face with that picture. My son was part of the Texas T-bones at Rice when he was in high school, and so we have some happy memories of brass performances, including Tuba Christmas - love it! Here's a CBS Sunday Morning explaining the phenomenon, for anyone not familiar with it.
https://www.youtube.com/watch?v=2Eq9m0zizkQ I love the one comment: "Yes, they are slowly taking over the world "