https://laughingsquid.com/black-sabbath-performs-a-jazz-version-of-their-heavy-metal-song-paranoid/
Los Angeles-based musician and composer Andy Rehfeldt (previously) created a great video remix of Black Sabbath performing a jazz version of their heavy
black sabbathheavy metalperformsjazzversion
https://laughingsquid.com/black-sabbath-instrumental-jazz/
Jazz Sabbath plays jazz interpretations of Black Sabbath songs, although they claim to have written the songs themselves in 1968.
jazz sabbathblackinstrumental