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As Carey's own attorneys put it in court:

"The claimed similarities are an unprotectable jumble of elements: A title and hook phrase used by many earlier Christmas songs, other commonplace words, phrases, and Christmas tropes like 'Santa Claus' and 'mistletoe.'"

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The Carey legal team also had two expert musicologists to testify to the two songs' lack of concrete similarities, with "no significant melodic similarities," as Lawrence Ferrara of New York University put it. The judge agreed, and now Carey's seemingly immortal Christmastime pop classic can continue its reign of yuletide dominance unabated and without Stone sharing in any of the royalties. And as you might imagine, the royalties from "All I Want for Christmas is You" are pretty substantial.

Unfortunately, the song is also the source of a dispute between Carey and its co-writer. Songwriter Walter Afanasieff had a long working relationship with Carey but they have been estranged for years, and despite his co-writing credit on the song (and his 50 percent share in the royalties), he has said Carey excludes him from her accounts of the song's creation.