Ozzy Osbourne: the quintessential Prince of Darkness, a figure whose very name conjures images of both musical rebellion and endearing eccentricity. As the frontman for Black Sabbath, he unwittingly co-authored the genesis of heavy metal, providing the haunting, often foreboding voice to Tony Iommi’s monolithic riffs. His distinctive, almost operatic wail, drenched in themes of existential dread and the macabre, wasn't just singing; it was a primal articulation of a generation's burgeoning unease, forging a sound both menacing and magnetic.

Post-Sabbath, Osbourne's solo career skyrocketed, showcasing a knack for hit-making anthems and a theatrical flair that bordered on the infamous. From his notorious stage antics to his later, surprisingly heartwarming reality TV turn, his public persona often overshadowed his profound musical contributions. Yet, beneath the calculated "madman" facade lies a vocalist whose impact on rock's sonic architecture remains undeniable. His instantly recognizable voice endures, an indelible shriek that irrevocably defined heavy metal and continues to resonate as a testament to his unique, enduring power.