While music is art, and art is subjective, there exists one album in the history of rock music that is viewed by many as, objectively, the "greatest rock album of all time." And yet, the artists who created this timeless classic elected to remain anonymous upon its release, opting instead for symbols to represent them. Led Zeppelin's fourth studio album — henceforth known as Led Zeppelin 4 — is viewed as a work of genius. On this episode of RockStories, we uncover the mysteries surrounding the writing and recording of arguably the best rock album of all time. Did the ghosts of Headley Grange influence the songs on "4"? Did an unseen hand write the lyrics of "Stairway to Heaven"? And what did those symbols appearing on the album's jacket mean, exactly? Get the answers to these questions and more on this episode of RockStories.

Few bands could endure the death of a key member, and immediately produce the most successful album of their career. But that's exactly what happened when ACDC turned tragedy into triumph with the release of "Back in Black" in 1980. On this episode of RockStories, you'll hear the story of Bon Scott's passing, and how this legendary Aussie quintet was able to not only survive, but thrive, and create the most popular album in the history of rock music.