The album featured several guest vocalists including Ian Astbury, Skin, Henry Rollins, Serj Tankian, Dave Grohl, Billy Corgan, Phil Anselmo, Peter Steele and Ozzy Osbourne. In late 2004 Iommi's second solo album was released, entitled The 1996 DEP Sessions. This album was originally recorded in 1996 but was never officially released.