Music mogul Simon Cowell and comedian Harry Hill were joined by celebrity friends at the opening of their joint venture 'I Can't Sing! The X Factor Musical'. The 6 million production put on at the London Palladium parodies the famous talent show, telling the story of two lovestruck singers who audition for Simon and his panel of judges. After the performance Cowell took to the stage. Crowds seemed enthusiastic as they left the theatre, UK X Factor judge in particular.
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