X Factor singer Jamie Archer, has admitted that he lost confidence after performing on the show’s Big Band week.

Simon Cowell changed Jamie’s song just 24 hours before the live show, a decision which reportedly caused trouble between the pair.

“I was thrown by it because it was so last minute. I wasn’t able to perform it as well as I wanted to,” he told vocal coach Yvie Burnett.

“I really am a bit concerned, I’ve lost my confidence a little bit in what we’re going to do, what song we’re going to choose. I just hope that we can get it right this week.

“It’s on my mind and I can’t stop thinking about it. Am I going to actually have to change my song? Until it’s been heard and everyone’s said that’s brilliant and working, right up to rehearsals I’m going to be worrying about whether I might have to change it.”

He added: “I don’t want it to happen again, not in Rock Week.”