Blitz says he planted the seed of covering Cash in bassist Verni's head and the pair ended up singing a duet on the track. He says: "It's funny, when it comes to Johnny Cash I did a side project called The Curse. It was a metal-esque project but it had a lot of rock'n'roll in it and I wanted my presentation in it to be different.

"In Overkill, my presentation is high end, it's from the chest up. I wanted something that said, 'Okay, here's your chance to sing from the chest down.' I studied Cash for months getting ready for this Curse record and I said to DD, 'You gotta check out some of this hidden classic stuff from Cash. Maybe we ought to do a cover.

"I walked into the studio and he was sitting there with an acoustic guitar and banging the kick drum with one foot singing Man In Black and I said, 'That's it. That's the one.'"