Comprising music from the film which spans Bruce Dickinson's solo career, the album features the rarities "Acoustic song" (previously only available as a bonus track on the 2001 "Best of special edition"), "Inertia (Live)" (previously only available as a bonus track on the expanded re-release of "Skunkworks" in 2005) and the album closer "Eternal" (previously only available as Japanese bonus tracks on "Tyranny of souls").