The little song and dance number at the end - that's me, my voice, howling out. It was a new experience for me. I've never sung before and I've certainly never sung on screen. I think I sung on stage when I was 13 and for some reason nobody's asked me to try it again since.
I've always wanted to push myself and move with the tide. That's just how I am and it's worked for me.
I can't tell you how much we laughed on the set to have Alec Guinness in a scene with a big, furry dog that's flying a space ship.