07/12/2012 04:53 GMT | Updated 07/12/2012 04:54 GMT

Jimmy Fallon And Mariah Carey Perform ‘All I Want For Christmas Is You' With Kids' Instruments (VIDEO)

Want to know our all-time favourite Christmas song? It’s ‘Fairytale of New York’. Obviously. But that’s not important right now. Let’s move on.

Our second favourite happens to be Mariah Carey’s ‘All I Want For Christmas Is You’ - so we were chuffed to bits to stumble across this new version, in which Mariah is joined by US chat show host Jimmy Fallon and his house band The Roots.

As you’ll see, The Roots almost steal the show - and give the tune a little twist - by playing along on children's instruments. To be honest, we’re a little bit envious of the fella at the front who gets to play the rainbow-coloured xylophone. We always wanted to play the xylophone at school but invariably got fobbed off with a poxy little triangle. Ah, them were dark days.

In the mood for more festive fun? Get a load of these Christmas prank ideas…