Simon Cowell is putting together a charity single to raise money for earthquake hit Haiti. It’s claimed Prime Minister Gordon Brown personally asked the X Factor judge to put together a track. Cowell told The Sun: “We are going to do a single. We only made the decision today. I have got to get it together in 24 hours.” Now it’s claimed massive stars like Beyoncé, Lady GaGa and Robbie Williams could record parts for the song. This Friday acts including Beyoncé, Coldplay, Jay-Z, Christina Aguilera and U2 will perform at the Hope For Haiti Now telethon – which has been organised by MTV and George Clooney. Jay and U2 have also recorded a song to raise cash for the cause.