Nearly 60,000 people gathered in London's Hyde Park for a Olympic concert before the 2012 Games officially kick off.<br/> <br />The day-long event featured performances from acts including The Wanted, Mark Ronson, Katy B and Dizzee Rascal.<br/> <br />Backstage, Ronson posed for pictures holding the torch.<br/> <br />The music producer later took the stage with Katy B for a performance of their Olympic song 'Anywhere in the World'.<br/> <br />The headline act of the night was rapper Dizzee Rascal.<br/> <br />The Olympic opening ceremony will begin at 9pm local time.<br/> <br />Julie Noce, Reuters
