This A Cappella Version of Mariah Carey's Holiday Hit Is 'All I Want For Christmas'

— -- Forget the new set of tools, the diamond jewels and the shiny, red convertible. All you really want for Christmas is to hear this lovely a cappella version of Mariah Carey’s “All I Want for Christmas Is You.”

Oxford University’s all-male a cappella group, “Out of the Blue,” is at it again, this time with their festive new twist on the holiday classic.

The YouTube video has nearly 150,000 views since it was posted Dec. 8, and it’s all for a good cause.

The song is a charity single, available for purchase on their website, with the funds helping to support a local children’s hospice, Helen & Douglas House.

The vocally inclined young men first went viral over the summer with their mesmerizing rendition of Shakira’s “Hips Don’t Lie,” even prompting a response from Shakira herself.

“Hey @ootboxford, we LOVE you’re a cappella Shak medley,” the songstress tweeted with a link to their video.