Christmas earworms: The gift that keeps on giving
Mariah Carey, Wham! and Paul McCartney are among artists who've been laughing — or rather singing — all the way to the bank with their Yuletide hits.
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Mariah Carey, Wham! and Paul McCartney are among artists who've been laughing — or rather singing — all the way to the bank with their Yuletide hits.
