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.

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 would not want to write something about something I do not think about

I never picked a bass up before Sabbath started

To do the Ozzfest again would be great. I'd like to finish with a final Sabbath album. You always feel that it is still a challenge.

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

The Geezer album, Black Science, had a lot of keyboards and it did not work.