CNN is reporting that Mariah Carey was sued yesterday over her 1994 Christmas classic “All I Want for Christmas Is You” by a songwriter who said he co-wrote a song with the same title five years earlier.

In a complaint filed in New Orleans federal court, Andy Stone is seeking at least US $20 million in damages from Carey, her co-writer and Sony Music Entertainment for copyright infringement and misappropriation, among other claims.

Stone, who performs as Vince Vance with the country-pop band Vince Vance & the Valiants, accused the defendants of having illegally exploited his “popularity and unique style” and caused confusion by recording the newer song without his permission.

Carey’s and Stone’s songs have different lyrics and melodies.