I think I must belong to an elite super group of people who have listened to obscene amounts of holiday music until they have unwittingly become armchair experts.
Name your favorite holiday song and I can either name at least two of the artists who have recorded it without referencing the internet, sing the chorus, or both. I tested this by asking my Facebook friends for their favorite holiday song, and I am currently 8/8 nailing it in both categories.
That's pretty impressive for someone who has never willingly played a holiday song. This has all been absorbed passively from my exposure to my mother's insane holiday song collection. She estimates she has at least 200 versions of just the song "Silent Night" to give you some perspective on how much holiday music she has.
My favorite is "The Wassail Song." I have no clue why really, I just love the refrain. Maybe it's because I can really belt it out* and the quality of singing is less important than the enthusiasm at which it is sung. I also really love "Auld Lang Syne" but no one in their right mind would be comfortable with me singing that one.
Holiday songs are imperative to making these cookies. When I go over to my mother's house to bake cookies, they never stop playing.
*I can also belt out Frosty the Snowman both in English and Spanish. This is the only thing I know to say in Spanish, which goes to show you they teach you nearly nothing useful in mandatory language classes like "Help! I think I need a doctor!" but hey, I know a Christmas carol!