Ed Sheeran has been known to play with artists all over the globe -- from longtime collaborator Amy Wadge to friends Foy Vance, James Blunt and Stormzy to Hilary Duff. On his Divide World Tour, he's bringing along some of his favorites, including Anne-Marie, who just helped him wrap up the European leg of the trek.

Backstage, British pop star Anne-Marie and Sheeran busted out her hit, "Ciao Adios," a kissoff about a guy who was constantly caught cheating. With Ed on his guitar and Anne-Marie delivering some soaring vocals, the amped up bop was stripped down to a more emotional version. Although the production was toned down, the acoustic rendition of "Ciao Adios" is no less fun than the studio version -- you'll still find yourself singing along to that bouncy-ball melody.

Watch the jam session below, and stick around until the end of the video, where Ed and Anne-Marie trade harmonies and seamlessly ad-lib until calling it quits.