Black Sabbath-Sabotage (1975)

In 1975, Black Sabbath released their sixth album, "Sabotage", considered the most progressive and elaborate work of the band's entire career. It features epic compositions in the purest progressive style, such as "Megalomania" and "The Writ", interspersed with six other excellent tracks. Taking these two epic songs as a reference point, we find "Megalomania", an extensive, magnificently crafted piece of over 10 minutes that conceptually deals with madness and mental illness and musically showcases Black Sabbath's psychedelic and experimental side with a superb, monumental proto-progressive track. Similarly, "The Writ" is another progressive piece, even heavier and darker than the former, and lyrically a declaration against the music business. The rest of the album ranges from the band's classic sound, such as the crushing "Symptom of the Universe", to the strange and instrumental "Supertzar", the heavy and evocative "Hole in the Sky", the mournful and somber "Thrill of It All", and the more accessible "Am I Going Insane?". "Sabotage," despite being a superb album and one of their most intricately crafted works, is also one of the most misunderstood and least appreciated albums in the entire discography of the Birmingham band. While it wasn't as immediately accessible as the first three albums, it was truly the pinnacle of Ozzy's creative prowess with Black Sabbath and the end of the band's most glorious period.