Bridget Carrington and John Legend performed a Nat King Cole favorite “Unforgettable” on American singing show “Duets” Thursday night, July 5, 2012.

Screen grab photo via Youtube

According to the judges: Kelly Clarkson: “That was my favorite. Really well done. Effortless.” Robin Thicke: “It was lovely. I would love you to remake that. John, you played so beautifully.” Jennifer Nettles: “It was wonderful. You bring such poise and class on stage.”

Watch the video below: