The Frozen songstress teamed up with the guys of Straight No Chaser to create a holiday song for the 21st century.
The benefit performance will also feature Jeff Blumenkrantz, Jennifer Cody, and Don Darryl Rivera.
The new play at The Public Theater is written and directed by Young Jean Lee.
The evening will take place before the release of the new film adaptation of the musical.
"...before Halloween, isn't that crazy?!" said Menzel on her official Facebook page.
Sessions will play Jim Hardy in this world premiere production.
Broadway's reigning diva joins a dozen of her closest friends to ring in Christmas Day!
Get the kids out of the room before you watch this one!