Shortly after Maren Morris won her first Grammy Award for Best Country Solo Performance on Sunday night (Feb. 12), she took the stage with Alicia Keys for a performance of "Once" that broke the internet.

"Once" is a track from Morris' 2016 album Hero, which also received a Grammy nomination tonight for Best Country Album.

Both Morris and Keys looked dazzling onstage, with outfits that sparkled as much as their smooth harmonies. The two looked comfortable with each other onstage, with Morris kicking off the first verse, Keys taking the second and the two sharing a duet for the remainder of the song. The two have worked together before, previously sharing the stage for an episode of CMT’s Crossroads, which aired in December.

Though Keys wasn't nominated for any Grammys in 2017, she is a 15-time Grammy Awards winner, winning Best New Artist in 2002. Morris was nominated more than any other country star in 2017 with four nominations: Best New Artist, Best Country Album, Best Country Song and Best Country Solo Performance, which she won with her hit "My Church."

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