Black Sabbath's reunion appears to have been quite a productive get-together - Ozzy Osbourne, Tony Iommi and Geezer Butler have already written an album's worth of new material.
Frontman Osbourne has revealed the group is working on 15 new songs, and there are already firm plans for a comeback album.
He tells, "Next year, 2013, is a good clue of what we'll call the album."
The trio is missing original drummer Bill Ward, who pulled out of the reunion over contractual disagreements.