Without a doubt, Ozzy is the craziest person I've ever met. Son of Sam is a close second.

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.

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

Jack Bruce, as soon as I saw him, it changed me. I didn't even know what bass players did until I saw Cream.

I never try and sound like Sabbath.

I was so frustrated in Sabbath after the last few albums. I just didn't like the musical direction Sabbath was going in

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.