I'm a musician, and I'm fascinated with the effects of sound, and tone, and pitch and melody and all that sort of stuff. It's the first thing I have to solidify whenever I'm coming up - not 'coming up' with the character, because I never come up with them, the writer does that - whenever I get onto a character. The first thing I need to get sorted out before I can then move forward, before I can feel any confidence whatsoever, is the voice.