"Step into Christmas" by Elton John. Embedding failed this time
https://youtu.be/SjXNNp-5aWw
Nope, but this is a really good question, though.
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It’s the original 1987 version of It Must Have Been Love (Christmas for the Broken Hearted) by Roxette, which was written to be a Christmas song. The original version gets no love at all from radio stations unlike the later 1990 version, It Must Have Been Love, which is associated with Pretty Woman.