Christmas song titles: which is correctly written?

Can you figure out which Christmas song title is correctly written? Check spelling, punctuation and Capitalization. Capitalization rules are below.
Capitalize the first and last word of any title, regardless of their parts of speech.
Capitalize other words within titles, including the short verb forms Is, Are, and Be.

Do NOT capitalize articles (a, an, the), prepositions (in, on, of, for, to, etc.) or little words like but, as, if, and, or, nor, UNLESS they are the first word in a title.