The song features Watt on guitar, Guns N' Roses bassist Duff McKagan and Red Hot Chili Peppers drummer Chad Smith.

[4][5][6] The song has been described as a "massive", "booming", "searing" and "epic" power ballad by Music Mayhem, Billboard, Revolver and Ghost Cult magazines, respectively.

I previously had said to Sharon [Osbourne, Ozzy's wife and manager] I should be doing an album, but in the back of my mind I was going, 'I haven't got the fucking strength.'

Writing for the website Loudwire, Joe DiVita described "Under the Graveyard" as "a non-traditional song for Ozzy", claiming that "the newfound influence presents itself in the genre-hopping arrangement".

[13] DiVita went on to add that "Fuzz-drenched lead guitars, romping bass lines and alt-rock undertones make this one hard to define.