In the video, which accompanies deluxe editions of the record, Head explains why he'd left the band in 2005 and how he ran into them again at a festival in the US last year.

He says: "My daughter wanted to go, so I was like, 'Alright, I'll sneak in there, maybe say hi to a couple of the guys.'"

Munky adds: "The day before, I found out he was going to be there and I kinda had a lump in my throat. When the moment happened it was complete relief to see the clarity in his eyes."

The shock came moments before Korn hit the stage. Head recalls: "Fieldy said, 'Hey man, I'm just saying, there's an amp and guitar set up for you.' I was like, 'What!'"