In an interview with Barbara Walters set to air on tonight's 20/20 Julie Andrews confirms that throat surgery last year damaged her vocal cords. In a pre-recorded interview, Andrews told Walters that she is trying to remain optimistic that her voice will return: 'To not sing with an orchestra, to not be able to communicate through my voice which I've done all my life and not to be able to phrase lyrics and give people that kind of joy, I think I would be totally devastated , ' she says.