The actress, Keira Knightley has to sing in 'The Edge of Love', in which she plays Vera Philips the lover of Welsh poet Dylan Thomas and admits that she found it incredibly hard.
Keira said, "I did some lessons with a voice coach because I can't sing. It was live. There were 100 extras and the director John Maybury was like, 'Now you're going to sing' and I've never been so frightened in my entire life. I never want to do it again. I don't want to be a rock star".
'The Edge of Love', which was written by Keira's mother Sharman Macdonald, is set during 'World War II' and is due for release on June 28.
