13

Serving as the final studio statement for the original heavy metal pioneers, '13' features Ozzy Osbourne, Tony Iommi, and Geezer Butler reuniting under the production of Rick Rubin. The album is a back-to-basics return to the dark, bluesy doom riffs that defined their early career. It provides a heavy and fitting conclusion to the band's legend, capturing the sombre, philosophical atmosphere of their most iconic work.