LONDON: Jessie J wants to provide a song for the forthcoming ‘Fifty Shades of Grey’ film.  The pop star insists her music has matured since she started her career and she is confident she could provide a track that would be well suited to the movie version of E. L. James’ erotic novel.  Talking to the Daily Star newspaper, she said: ‘’I could do a song for the ‘Fifty Shades...’ film. Who knows, why not?  ‘’I’m 25 now and when I was 18 I wrote my first album. So however much I love ‘Price Tag’ I feel a bit childish singing it now. And that’s OK to say.–EP