The CMT Next Women of Country Tour made a stop at the Beacon Theatre in New York City last Wednesday (Jan. 20), where headliner Jennifer Nettles gave fans a big surprise when she brought longtime friend Sara Bareilles to the stage for a star-studded duet. 

The duo performed a rendition of Bareilles' “She Used to Be Mine,” which will be featured in the upcoming Broadway musical Waitress. Nettles and Barailles' voices complemented each other beautifully as they harmonized back and forth through out the entire song. 

The tour stop also featured a mix of songs straight from the Sugarland song book, including the duo's classics "Stay" and "Baby Girl," which Nettles sang solo on Wednesday.

The 41-year-old country singer even gave audience members a sneak peak of her upcoming album, titled Playing With Fire, performing new songs “Drunk in Heels” “Chaser” and “Sugar." That project is expected to be released sometime this March. 

The first single off Playing With Fire, "Unlove You" was also a part of Nettles' New York City show, which she prefaced by explaining the healing powers of country music.

"Country music celebrates realness and it heals," Nettles said before going into the song. "This is my new single and I hope it guts you in the most beautiful way possible.”

The CMT Next Women of Country Tour — featuring openers Brandy Clark and Lindsay Ell, will make stops in the Carolinas next week before jet setting out west for shows in Nevada, Colorado and New Mexico.