In 2011 the guitarist admitted: "The band is wondering, 'When is this thing? When do we hear it?'" Previously, Graham Nash had accused the producer of ruining an abandoned Crosby, Stills And Nash album, while Slipknot's Corey Taylor said he'd never work with the producer again.

Now Gibbons tells Shepherd Express: "Rick is in no way going to get set into motion, when it may be hasty or hurried. He really is sincere when he works with any artist.

"Rick said, 'Let's keep working on it until it's right.' You find yourself returning to a particular track - it may be months tucked away in the can - and you say, 'Let's come back to that.'"

He admits Rubin's approach presented issues, saying: "It can be challenging to listen to the same song for two hours and then say, 'I want to sing it again.' Then you say, 'Would this word be better here? Let me sing it again.' After a full day you're just toast."