In a video posted to Sheeran’s Instagram, he plays a yet-to-be-released track for a couple getting ready to exchange vows at a Las Vegas wedding chapel.

The clip kicks off with the couple — revealed to be Jordan and Carter Lindenfield, according to Fox 5 Vegas — holding each other’s hands and preparing to say “I do,” when Sheeran, with his acoustic guitar and a few backup singers, emerges to play “Magical” from his forthcoming album, Autumn Variations, arriving Sept. 29.

“This is how it feels to be in love/ This is magical, this is magical/ Is this how it feels to be in love?/ This is magical, this is magical,” Sheeran sings on the chorus. The astonished pair, after saying “I do,” ask for a photo with Sheeran, who signed their marriage certificate as a witness. (The wedding crashing comes after Sheeran needed to postpone his Las Vegas concert at Allegiant Stadium following excessive heat in the city.)

“Crashed a wedding, this is Magical x,” the singer captioned the video.

The newly minted Mrs. Lindenfield wrote in the comments section, “THANK YOU SO MUCH for the most magical day of our lives … we’ll truly never forget this or the wedding advice you gave us.”

In her own post, Lindenfield added, “We’re still processing what an unforgettable moment this was! Thank you @teddysphotos for truly making our special day magical.”