I'm just listening to this and I'm far from convinced by it. I always loved Ozzy's vocals but when he left I also loved Dio's contribution particularly for Heaven & Hell. I'm a big fan of Deep Purple and the Ian Gillan Band. I went to see Gillan at his height with "Gillan". But this is neither Sabbath nor Gillan. It has a Run DMC vibe in "Zero To Hero" with a talking vocal rather than what I'm used to with Black Sabbath. I'm going to play it all the way through but I'm struggling to enjoy it the way I enjoy almost everything else they've ever done.
I don't even follow Black Sabbath, but somehow, I ended up looking up their LP discography, and I have found the changing line-up of the band interesting. After two studio albums, Ron Dio has left at this point, being replaced by Ian Gillan, which surprised me. Drummer Bill Ward's name didn't appear on the songwriting credits for the previous album, so I assume he left the band and came back for this one.