He's previously told how some of the record's lyrical content came from his time in prison in the Czech Republic before being acquitted of the manslaughter of fan Daniel Nosek in 2010. The song Still Echoes, launched last month, was written about a Nazi guillotine in the complex where he was held.

Now Blythe tells Decibel: "The other song that deals directly is called 512. I was in three different cells while I was in prison, and the second one was number 512.

"I started writing it as an essay on the nature of time and entitlement in modern society. Because time seems to move differently in prison-it really does. It's f***ing strange."

But the concept changed to an exploration of entitlement. "One day my cellmate did some mopping for the guards, so they gave him a scrubbie, like a sponge that you'd get for 99c at the grocery store," he recalls.