“He is one of my favorite voices to sing with,” Clarkson admitted ahead of the show.

Brett Eldredge teamed up with Kelly Clarkson on The Kelly Clarkson Show for a sparkling performance of their Christmas duet, “Sweet December.” This impressive blend of powerhouse vocals took place during the show’s beloved “Kellyoke” segment on Tuesday.

The show’s set was transformed into a winter wonderland while Clarkson and Eldredge each dressed in their Christmas best, creating the perfect background to the warm delivery.

Brett Eldredge; Photo by: Weiss Eubanks/NBCUniversal
Eldredge’s vocals were the first to light up the room as he began the opening set of lyrics. Clarkson, in her glamorous red dress, joined in to finish off the first verse before uniting on the chorus that captures the feeling of a romance growing even stronger amid the magic holiday season. A feeling of warmth suddenly erupted through the microphones amid the impressive set of harmonies that highlighted their individual talents.

Brett Eldredge, Kelly Clarkson; Photo by: Weiss Eubanks/NBCUniversal
They sing, “Baby, baby, turn on the Christmas tree/ Take me home and set me free/ A blanket’s good but your love’s even better/ Baby, baby, put on the classic songs/ You make me wanna sing along/ Your heart’s good at making me remember/ It’s gonna be a sweet December.”

Both artists flashed bright smiles to the audience after delivering the final notes with a delicate softness, marking the perfect end to the story about a head-over-heels in love couple.