Scott Williams, who based on volume of YouTube videos plays at Disneyland a lot, playing songs that seem winter-y (the carols had embedding disabled):
Somebody in New Orleans playing. Can't tell you who, because of the extreme close-up.
The Twelve Girls Band, an all-woman band from Vietnam, playing a variety of instruments including the hammered dulcimer. While wearing elf suits. This is Safe For Work, but it sure doesn't feel that way.