"They are all great songs," he says. "The reason they are not on the album is because the 13 that we chose are very consistent with what we wanted to do, which was release an undisputable heavy metal album. The others, they are not lightweight by any chance, but they've got a different feel, a different texture.

"So it's not a case of trying to rip the kids off and trying to get more money for an extra album, it's just a case of, these five tracks seem to deserve to go on their own CD, and that's what we did."

"Redeemer Of Souls" marks guitarist Richie Faulkner's studio debut with Priest; he replaced founding member K.K. Downing following his retirement in 2011.