Photo: WENN
Mariah Carey surprised the audience of Late Night with Jimmy Fallon when she stopped by to make a special appearance.
Fallon and the show's house band, The Roots, previously performed the summer hit 'Call Me Maybe' using instruments that can be found in a children's classroom - such as a kazoo, wood block and Fisher Price xylophone.
This time, they gave the 'Fisher Price' treatment to Christmas classic 'All I Want For Christmas Is You', and Mariah Carey herself stopped by in order to provide the vocals - with back-up from four children.
The description on the YouTube video reads, "Backstage before the show, Jimmy, Mariah Carey, and The Roots grabbed some instruments you'd find in an elementary school classroom and stopped by the Late Night "Music Room" to sing Mariah's holiday classic, 'All I Want For Christmas Is You'."
Watch the video of the performance below:
Mariah's Christmas hit is a regular on the festive playlists, and has already returned to the charts in 2012 as well lead up to the end of the year. 'All I Want For Christmas Is You' is currently at No.30 as it makes its annual ascent up the charts.
It is joined by fellow festive favourite, 'Fairytale Of New York' by The Pogues and Kirsty MacColl, which currently at No.27 in the UK charts.
Photos: Mariah Carey and her Christmas breasts perform in New York
