“I’m on the pipe organ. What a brilliant sound. I found this church organ, and I learned some Bach piece on it. It’s a whole different approach playing a pipe organ, particularly when it comes to the feet – I’m not Fred Astaire on the foot pedals.

“I got around that, though. The piece is in F, so I just planted my foot on the F pedal and played everything else like I was doing the piano. But it’s kind of weird, though – you get this delay. That took a while to get used to. I worked a little Bach French Suite in D minor in there. I was quite pleased.

“We recorded it with a mobile recording facility. There was no way to bring the pipe organ to Advision Studios, and of course, there were no computers and samples and everything that you have now. But it worked out well. Greg and I realized that we had a song, and then he went off to work out the lyrics.

“I have no idea about words. I remember Greg going into the vocal box to sing it, and Carl and I were sitting in the control room wondering how it was all going to come out. Suddenly, we hear Greg sing, ‘Why did he lose six million Jews?’ That kind of halted the proceedings for a while. We had to consider that. ‘Do we really want to go there? This is too heavy… ‘ But Greg was like, ‘This is what it’s about.’”