And he's revealed that the record might not be called 13 despite official announcements saying it will be.

Butler tells KCALfm: " None of us have been drinking or doing drugs or anything. It's a bit more professional in that way. We stuck to a schedule: every day we'd go in at one o'clock and finished at six. Five hours a day and that's it.

"It's got the feel of the first three albums, back to the basic rawness. The lyrics are about life, death, doom and everything else. You get Prozac with each album�"