“It was a weird song, and truthfully, I wasn’t very excited about it. I couldn’t tell where it was going. It was typical Stevie – most of her songs, in their inception, are close to 10 or 12 minutes long, with endless verses and epic stories.

“My job became one of editing, taking all of these sections and making them flow, cutting out the fat. Stevie would go crazy – ‘Oh, that verse was about my mother! That part was about my dog!’ [laughs] These things would mean something to her, but they had to work for the listener.

“The song grew more evil as we built it. I called over to SIR and they send over a bunch of weird instruments, like an electric harpsichord with a jet phaser – that created a cool, whooshing sound. We weren’t looking for musicality, we were looking for accents, mood. We marked the keyboard with tape so Mick could play the right notes.

“Stevie had a lot of Courvoisier in her, and she did this incredible coyote-like howling at the end. She had become this witch she was always writing about. To accentuate her vocals, Mick went into this room we had miked up, and he broke sheets of glass. He was wearing goggles and coveralls – it was pretty funny. He just went mad, bashing glass with this big hammer. He tried to do it on cue, but it was difficult. Eventually, we said, ‘Just break the glass,’ and we fit it all in.”