Ed Sheeran is set to take the stage with a legend on the night of the Grammys, and he's pretty nervous about it. The young British singer/songwriter will be performing with the one and only Elton John! Earlier this week, he told radio station MIX 106.5 about how the performance was haunting his dreams with anxiety: "What happens if my voice cracks when I'm singing? I fell asleep just thinking about it and had this really odd dream," the 'Song of the Year' nominee said. "[In the dream] We decided not to play the song we were going to play and we were going to play this other traditional song. I forgot to give him the piano reference and he just didn't play. Everyone was really confused and I got told off. I hope it isn't a pre-warning to what is actually going to happen!" Yikes!

Publicly, though, Sheeran is keeping his cool. He took to Twitter to announce the duet:

This is a performance we don't want to miss! Tune in to the GRAMMYs on Sunday, February 10th at 8/7c on CBS.