Rascal Flatts, Christina Aguilera acm awards 2015

Musicians Joe Don Rooney of Rascal Flatts, Christina Aguilera and Gary LeVox of Rascal Flatts perform onstage during the 50th Academy Of Country Music Awards at AT&T Stadium on April 19, 2015 in Arlington, Texas.  

Ethan Miller/Getty Images

Christina Aguilera is not particularly known for her country stylings, but the pop icon headed to Arlington, Tex. on Sunday night (Apr. 19) to take the stage with Rascal Flatts at the ACM Awards. The group and singer teamed up on a pair of powerful songs that were both met with resounding applause.

2015 ACM Awards Winners List | Backstage Photos

The duet began with a stripped-down version of "Shotgun," the song Aguilera's character on Nashville performed on a recent episode. Rascal Flatts gave Aguilera an assist on the song, and then the performance segued into "Riot," from the band's recent album Rewind. Rascal Flatts and Aguilera were joined by a full band and small choir, and at the end of the performance, Aguilera gave singer Gary LeVox a huge hug.

Check out video from the touching performance below: