"All I Want for Christmas Is You" is a Christmas song performed by American singer and songwriter Mariah Carey. She wrote and produced the song with Walter Afanasieff. Columbia Records released it on November 1, 1994, as the lead single from her first holiday album and fourth studio album, Merry Christmas. "Christmas" is an uptempo love song that includes bell chimes and heavy back-up vocals, as well as use of synthesizers. The song's lyrics declare that the narrator does not care about Christmas presents or lights; all she wants for Christmas is to be with an (unidentified) loved one.

Two music videos were commissioned for the song: the song's primary music video features grainy home-movie-style footage of Carey, her dogs and family during the holiday season, as well as Carey dressed in a Santa suit frolicking on a snowy mountainside. Carey's then-husband Tommy Mottola makes a cameo appearance as Santa Claus, bringing Carey a gift and leaving on a red sleigh. The second video was filmed in black and white format, and features Carey dressed in 1960s style in homage to The Ronettes, alongside back up singers and female dancers. Carey has performed "All I Want for Christmas Is You" in a slew of live television appearances and tours throughout her career. In 2010, Carey re-recorded the song for her second holiday album, Merry Christmas II You, titled "All I Want for Christmas Is You (Extra Festive)". Carey also re-recorded the song as a duet with Canadian singer Justin Bieber for his 2011 album Under the Mistletoe, titled "All I Want for Christmas for You (SuperFestive!)". The song has also been covered by many artists over the years.

In the years since its original release, "All I Want for Christmas Is You" has been critically lauded and has become established as a Christmas standard; it was once called "one of the few worthy modern additions to the holiday canon" in The New Yorker, and continues to surge in popularity each holiday season. The song was commercially successful, topping the charts in Hungary while reaching number two in Australia, Japan, the Netherlands, Norway, and the United Kingdom, and the top 10 in several other countries.The Daily Telegraph hailed "All I Want for Christmas Is You" as the most popular and most played Christmas song of the decade in the United Kingdom.Rolling Stone ranked it fourth on its Greatest Rock and Roll Christmas Songs list, calling it a "holiday standard." In December 2015, the song peaked at 11 on the Billboard Hot 100, making it its highest peak since its original release.

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