Tonight's (Dec. 1) airing of the fifth annual 'CMA Country Christmas' television special saw Idina Menzel performing an incredible duet with country superstar and host of the evening Jennifer Nettles. The song? In case you didn't already guess, it's the crazy popular ‘Let It Go.'

The two looked beautiful in floor length gowns totally appropriate for the Christmas-themed special. The best part? They sounded even better than they looked! Both women proved their total dominance in their respective genres, blowing us away with their unbelievable vocals. And considering the fact that ‘Let It Go’ is a decidedly difficult song to get right, we’re totally impressed with how seamlessly their two voices blended together.

Idina also performed two fantastic tracks off her 2014 Christmas album 'Holiday Wishes,' including 'White Christmas' and 'Do You Hear What I Hear?' but, naturally, 'Let It Go' is definitely our favorite.

Check out their cover in the video above!

Need Gift Ideas? Browse Through PopCrush's 2014 Holiday Gift Guide!