I'm a serial monogamist - I tend to dive in.
I think it was Dad who gave me my nickname 'Katy Custard,' recognising my deep, positive and lasting relationship with it.
I was very into tribal techno and used to go and really lose myself in great dance music.
I really liked writing rhyming poems and plays.
The only thing I know about being Asian is that my hair is black and my eyelashes are straight and I have strange eyebrows.
I can do the vocal acrobatics but I really try not to. I've always been drawn to singers who sing it like it is, pure, straight down the line: Ella Fitzgerald, Patti Smith, Carole King. Simplicity is really important to me.
It feels like your subconscious can be way ahead of you, as a songwriter. You can write a song that you think is about one thing and months later you're playing it and thinking, hang on, this is completely informing where I am now.
When I was seventeen, I left Scotland to go to Kent, a well-to-do boarding school in Connecticut, where there was a contingent of really naughty kids.
When I tried to get a record deal, only one label wanted me. The rest said 'oh, we've already got a girl with a guitar.' Can you imagine them ever saying that to a guy?
I would never pigeon hole myself stylistically because I just don't know what I am going to want to do next.
You know, we were outdoorsy types, my folks, and one of the first tapes I got, a friend gave me a cassette tape of Ella Fitzgerald singing with the Count Basie orchestra. And it was the first time, really, that someone's voice had really spoken to me, and it was just so pure.
In Scotland, Dad grew courgettes which were the size of my leg. I'd step into the garden and it was like 'The Day of the Triffids.'
Music for me has always been a vent and has always been a great outlet.
I'm not really that comfortable, to be honest, singing about my darkest moments.
I really enjoy tech, but I'm not voracious - I'll find stuff because I want to use it, not because I'm interested in what's out there. It's a sort of necessity relationship.
I grew up thinking, 'You go to university, you get your degree, you get a job, you get married and then you have a family.' But when I got to the point in my life where I had all those things, and was looking to start a family, I was miserable. I realised I didn't want kids.
I work better under pressure. I was the local badminton champion when I was a kid, and there was another girl who used to thrash me for the five days leading up to the tournament and then I would just nail her to the floor in the competition.
For me, success is being happy. I used to think it was lots of houses, lots of record sales, lots of stories to tell. But some massive life changes, getting a divorce and my dad dying, led to a huge period of reflection.
When my divorce came through, it was like being let out of a cage because I hadn't been true to myself before; I was being something that was expected of me.
Well, I was a real late-comer to listen to music, actually, because my parents - first of all, my parents weren't big music fans. They didn't listen to music. We didn't really listen to stuff in the house.
