Is the choral part of Ozzy's Diary of a Madman based on any classical opera?

Yes, the choral part of Ozzy Osbourne's "Diary of a Madman" is influenced by classical Opera, particularly drawing inspiration from the works of composer Richard Wagner. The dramatic and operatic qualities in the song reflect a blend of heavy metal with classical elements, creating a unique sound. This fusion enhances the thematic depth of the lyrics, which explore madness and inner turmoil.