Madonna and Paul McCartney Duet?  7/7/05

Madonna discussed collaborating with rock legend Sir Paul McCartney backstage at the Live 8 concert in London on Saturday (2JUL05).

The pair were among the star-studded line-up at the charity extravaganza in the capital's Hyde Park.

And, according to the New York Daily News, Madonna took the opportunity to approach McCartney for a guest spot on her upcoming disc.

A source tells the newspaper, "She was spending quality time backstage with Paul McCartney, and they had a 15-minute chat about her new CD and him possibly doing something with her for the record."