My dad used to say to me, 'You look more like me than I do.'

I was very empty after my father passed away. It was an emotional time, as it would be for anyone, but to be in the studio every day was kind of cathartic and healing and it just seemed very natural to continue.

I was recording stuff with my dad when I was like five, six years old. I played with him on tour. I'd gone with him to Japan in '91, played some gigs, did a couple shows at the Albert Hall.

My job description is... being enthusiastic.

I came home one day from school after being chased by kids singing “Yellow Submarine”, and I didn't understand why. It just seemed surreal: why are they singing that song to me? I came home and I freaked out on my dad: 'Why didn't you tell me you were in The Beatles?' And he said, 'Oh, sorry. Probably should have told you that.'

I sometimes listen to music I made and find it to be something I wouldn't want to buy from a store, if there was a store. When it's like that, you have to make what you want to hear.

If you were the first person ever to design an application for the iPhone and you patented it, you would be very, very better off than we are right now, you know? But you've got to be the first one to do it. So I figured that Led Zeppelin or the Stones were going to do it unless we just got on to it. So I got cracking with the guys from Apple.