Actress Keira Knightley was left traumatized after having to show off her vocal talents in new film The Edge Of Love. The star, 23, was terrified of singing in front of an audience - and has vowed never to sing in public again.

She says, "I did some lessons with a voice coach because I can't sing. There were 100 extras and John (Maybury, the director) was like, 'Now you're going to sing...' I've never been so frightened in my entire life."

And Knightley admits the experience was so horrific, she'll never embark on a career in the music industry. She tells Total Film, "I don't know how singers do it. I never want to have to do it again. I don't want to be a rock star."

-More Keira Knightley Pictures

(This news article provided by World Entertainment News Network)