Obama listened Mariah Carey's song before results

London, (ANI): She might have won many hearts with her songs and looks, but Mariah Carey was the happiest when she came to know her very special fan - the new president of the United States. Barack Obama's wife Michelle played Mariah's hit song 'Hero' to him before the result was announced, a pal close to the singer has revealed.

"She was blown away when she heard. She is so honoured to have played her part in such an occasion," The Mirror quoted Mariah's pal, as saying. Meanwhile, Carey was recently in London to promote her greatest hits album, which caused quite a stir with the X Factor contestants. The stunner will sing on the show this week while the rivals will each have to cover one of her songs.