During our first meeting, Tony Iommi was a great jazz guitarist, his capabilities cover all styles - Black Sabbath has even narrowed his horizons.

I'd sort of dabbled in Black Magic, not practicing it, but I was interested in it. All these horrible things kept happening to me - a lot of my aunts and uncles started dying and I was seeing all these bloody things visiting me during the night.

Toward the later days of Sabbath, instead of going in and knocking out what songs we did in rehearsal, we would polish them to death.

I never try and sound like Sabbath.

Ozzy wanted to get us back together. It's been 20 years. We did a couple of songs during his farewell in 1992 and that got the ball rolling.

Black Sabbath was written on bass: I just walked into the studio and went, bah, bah, bah, and everybody joined in and we just did it.

I never picked a bass up before Sabbath started