I suddenly realized that in order to do what I wanted to do, I had to become that which I hated - which is the head of a record company or a digital media conglomerate - and just do whatever you want.

When my dad toured in '91, I think my first gig properly was the Tokyo Dome, 50,000 people indoors. That was pretty scary. I was 12, or 13.

I did the first backwards guitar solo on ‘I’m Only Sleeping’

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.

I can't even begin to describe how I miss him. He always supported me in everything I did. He was a very wise man and I realised at an early age I could learn a lot from him. He always gave me the right answer. But above all he was a very easy-going guy and all he wanted was to be my best friend. I'm an only child and so he shared everything with me. Of course he was very young to die and I was very young to lose a father. But there was nothing left unsaid between us.

I was always brutally teased for being George Harrison's son. That was from the age of about four or five, before I even knew who he was. And for seven years people would follow me about school singing 'Yellow Submarine.' I still can't listen to that song to this day.

I suddenly realized that in order to do what I wanted to do, I had to become that which I hated - which is the head of a record company or a digital media conglomerate - and just do whatever you want.