Sir Paul McCartney was worried he could be the worst part of the band while recording songs for his new album 'Kisses on the Bottom' at a Hollywood studio.

The ex-Beatle, 69, only sings on it and leaves all the instruments to others for the first time in his career.

"Here was I in this completely new role, feeling really quite intimidated. There was nothing to hide behind, no guitar or piano," the Mirror quoted him as saying.

"I'm in front of really good musicians who know what's going on and I'm thinking, 'bloody hell, I'm going to totally disgrace myself here'.

"They're all going to be smiling at me, but secretly thinking, 'Jesus Christ, this guy is rubbish'. Then I think, 'Get it together Macca, come on'," he said. (ANI)