“It was hard to decide between this and Aqualung, but Aqualung is more classic rock to me, whereas Thick Is A Brick is prog. It’s an absurd record in many ways, with Ian Anderson telling this story of a boy – so it’s a concept record, really. What can be more prog rock than that?

“There are some passages where they go too far with their polyrhythms, but there’s a lot of great, amazing and totally off-the-wall musical passages that work. You sit there and go, ‘Wow, they’ve lost their fucking minds!’

“It’s funny about Ian playing the flute: When I was a kid, I didn’t think so much that it wasn’t a rock instrument; I just thought that it was another sound. It wasn’t until later that I was like, ‘Hmm, you’ve got this guy in tights, he’s on one leg, and he’s playing the flute.’ Hey, I’ve used flute on a lot of my records, so there you go.”