On Sept. 28, John Legend will take the stage during Apples iTunes Festival at the Roundhouse arts center in London. Legend worked behind the scenes with the likes of Jay-Z, Kanye, Nas, Mary J Blige, Alicia Keys and even Michael Jackson, but hes now most famous as a neo-soul crooner in his own right. Hes back with a new album, Love in the Future, which will get its first London airing at the iTunes Festival.