Apart from the first set - which used high-level concert lighting - once you stepped into the two narrative pieces, we were working with lower-level theatrical lights. In most cases, people were really respectful of that.

Nobody really knows, do they? They told Stephen Hawking he only had a year left to live and how many years ago was that? You can't know it all.

With some of the songs, we brought the pitch down to alto.I'm older, so naturally my voice is lower now.

Some of the best pop music ever has come out of the States.

I suppose my biggest concern would be if the planet is going to be in good enough shape for the next generation to have the privileges that we've had.

We have a female prime minister [Theresa May] here in the UK. I actually really like her and think she's wonderful. I think it's the best thing that's happened to us in a long time.

What made it special made it dangerous, so I bury it... and forget.