Duets disappoint Sir Paul after Lennon

Sir Paul McCartney has revealed he is constantly disappointed by collaborations having worked with John Lennon.

The musician said he had worked with numerous others since The Beatles split but they could never completely satisfy him.

"It's a funny subject the collaboration thing because I collaborated with John and you're a little bit spoiled after that," he explained. "That was one hell of a collaboration.

"I've done it quite a bit since and, I think - and I hate to say it - there's inevitably a sense of disappointment because it was just so cool for John and me to be working together, because we started so young and knew each other's ways and minds."

Sir Paul, whose new solo album Memory Almost Full is out on June 4, continued: "I'm a little bit wary of collaborating with other people because it doesn't happen as easily or as amazingly as it did with John."