AN incredible cast of musical legends set the Queen’s Diamond Jubilee party rocking, Monday night, with a triumphant Buckingham Palace concert.A vast Union Jack-waving crowd sang and danced as Sir Paul McCartney, Sir Elton John, Sir Tom Jones, Dame Shirley Bassey, Stevie Wonder, Kylie Minogue and Cheryl Cole led a star-studded line-up.More than a quarter of a million people packed into The Mall and St James’s Park — with a lucky 18,000 getting prime spots in a specially-built arena at the Palace itself.Robbie Williams got the evening off to a pulsating start with a rousing rendition of his hit Let Me Entertain You. Daily Mail