Warner Bros. goes deep into the vaults to reveal the secret studio history of this very public performer with a boxed set of unreleased recordings chosen from sessions spanning 1971-1998. Encompassing more than 25 years, this collection's 63 songs, outtakes, and ephemera provide extraordinary insight into the studio work of one of rock's legendary figures and paints a picture of what might have been. Many of these performances are more stripped-down and intimate than their released counterparts, so the set becomes an illustration and a showcase of Rod's creative process.