Following his death, the life, work, and legacy of Ozzy Osbourne has been widely discussed in the media. Less discussed is the wide-ranging apocalypticism running throughout his lyrics. Jack Holloway wrote a CDAMM article and a blog post for CenSAMM analysing this topic in some detail:
Ozzy and Enoch: How Black Sabbath Reinvented Apocalyptic Literature (blog post)
Black Sabbath (CDAMM article)
