Eddie Van Halen was probably the most influential.

My early influences were the Shadows, who were an English instrumental band. They basically got me into playing and later on I got into blues and jazz players. I liked Clapton when he was with John Mayall. I really liked that period.

In the past, I'd sort of know before Ozzy sang something, what he was going to sing. I'd know what sort of way a melody was going to go 'cause of the way he'd approach it.

I hated school. After 15, you went off to college if you were good enough. It didn't appeal to me so I left school. I did what everybody did - get a job.

The feeling you get from playing to a good audience is hard to describe without sounding as though you are talking silly. But reaction is important. You might feel in yourself that you're doing it ok but it's when you get the live reaction that you know you're doing it right.

Like most things that happen with Sabbath, it happened all of a sudden. I was intending on doing some recording, but out of the blue, Sharon called up and said she wanted us to do these gigs with Ozzy. I said that if everybody else was up to it then I would love to do it.

I was mostly surprised by the rap artists, actually, that were influenced by Sabbath. That was a surprise. But it's very nice and I'm very honoured. It's nice to know after 27 years now that what I said in the first place has stuck, and that was the belief in it.