When Black Sabbath keyboardist Geoff Nicholls passed away four years ago, he left behind something of note for fans. A tape of outtakes from the Heaven And Hell album during the Ronnie James Dio era of the band. And now, Nicholls’ stepson has uploaded a previously unheard track from the sessions onto YouTube. Titled “Slapback,” the song was confirmed by Geezer Butler to be written and performed by Sabbath in that time period, but was deemed to not be up to par with the rest of the album. Give it a listen below to see what you think of Butler’s assessment.