Ed Sheeran has admitted that he has been dreaming about his upcoming Grammys duet with Sir Elton John going wrong.

As previously reported, the two British acts will team up to play one of Sheeran's songs at the glitzy awards ceremony in Los Angeles on February 10.

Speaking to Mix 106.5, Sheeran revealed that he once had a nightmare about his duet going awry after a last-minute change of song. He said:

"I went to sleep worrying about the Grammys...Like what happens if I win and what happens if I don't? And what happens if my voice cracks when I'm singing? I fell asleep just thinking about it and had this really odd dream."

Sheeran continued: "I'm doing the duet with Elton at the Grammys and I had this dream where 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!"

The singer-songwriter's track 'The A Team' meanwhile is nominated for the Song of the Year award at the Grammys, but he remains pessimistic about his chances of winning.