"It Must Have Been Love," Roxette (EMI)

The Swedish duo's song, a solid 80s-90s pop rock midtempo ballad with Christmas overtones, was originally released in 1987, only in Sweden. That version was subtitled "Christmas For the Broken Hearted." That version eventually found its way into their worldwide catalog on a 1997 re-release of the album Pearls of Passion. Subsequent re-recordings, including an inclusion on the soundtrack of the film "Pretty Woman," toned down the Christmas references, and there's even a Spanish language version. (The link to the most Christmas-oriented version on Amazon is to a wildly expensive import CD, but you can download or stream it for much, much less. Or you can settle for the "Pretty Woman" version.)