Kelly Clarkson & Wynonna Judd Did a Powerful Duet of a Classic Christmas Song

And not a note was missed! The Kelly Clarkson Show Host with the most Kelly Clarkson and The Voice Mega Mentor Wynonna Judd belted out a rocking rendition of "Santa Claus Is Comin' to Town" during NBC's Christmas at the Opry, which Judd also hosted, showcasing their powerhouse vocals.

Backed by a full band, the pair traded off lines in the song, with both women giving it their all. Clarkson opted for a festive green dress ,while Judd wore a suit and glitter in her hair. They each changed into another gown for their other performances that evening; Clarkson sang her hit "Underneath The Tree," while Judd delivered a soulful rendition of "O Holy Night," among other tunes.

Whether you've been naughty or nice, you can check out their fun duet, below. 

What to know about "Santa Claus Is Comin To Town"

The song was written by J. Fred Coots and Haven Gillespie, and the first known recording of it is from 1934. It's enjoyed success thanks to covers by artists like Bing Crosby and The Jackson 5 over the years and has become a Christmas standard; there is no one definitive version everyone knows. Bruce Springsteen has sung it, and so has Fred Astaire!

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Wynonna Judd performs during Christmas At The Opry. Photo: Mickey Bernal/NBC