Kristin Chenoweth & ‘AGT’s’ Darci Lynne Farmer’s Holiday Duet Will Melt Your Heart (Exclusive)

Darci Lynne Farmer is ringing in the holiday season with the help of a famous friend – Kristin Chenoweth!

In an exclusive sneak peek at her upcoming NBC holiday special, “Darci Lynne: My Hometown Christmas,” the “America’s Got Talent” winner joins forces with the Broadway legend to sing a mashup of two classics: “Sleep Well, Little Children” and “What a Wonderful World.”

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The yuletide medley – which Kristin sang solo on her 2008 Christmas album – marks a special step into the spotlight for Darci. The teenage ventriloquist – who typically performs alongside her lively puppet pals – leaves them behind for the tender performance, letting her own singing voice take center stage.

Kristin isn’t the only A-lister joining Darci for her first-ever Christmas special. The one-hour telecast also features performances from Toby Keith, Pentatonix, Lindsey Stirling and Hunter Hayes – plus surprise guest appearances from “AGT” judges Simon Cowell, Howie Mandel, Heidi Klum and Mel B.

“Darci Lynne: My Hometown Christmas” airs Dec. 11 9/8c on NBC.

WATCH: ‘America’s Got Talent’: Darci Lynne On Her Big Win – ‘I’m So Blessed’