This is a gem of an album. It has a deliberately stripped down production style which is highly effective. It only works against the music on the two tracks 'Stay Out Of My Mind' and 'This Is Your Life'. The former has a brilliant middle-section which needs a stronger, lusher 'Rainbow'-type arrangement. The latter begins with a grand piano and a real sense of Dio-esque life-affirming-questioning epic. But the powerful orchestration and guitar riffs never arrive. Maybe that is part of the statement, I don't know.
Lyrically, Ronnie James Dio is the most underrated song writer on the planet. I know of no other writer who mixes such a potent blend of allegory and realism. The guy is a genius and I totally love what he does. There is deep compassion, social commentary ('Big Sister' is as vicious a swipe as you'll ever hear against the all-prevailing tyranny of the Nu Political Correctness)and biting existentialist wit in his songs, as well as a literary aesthetic. It's staring you in the eyes every time, and a lot of people just don't get it.
Some of the riffs here are deliberately mutated into '90's type grunge chords, the song 'Black' in particular (of course it was made in 1996)and it is admirable to see Dio showing how he and the band can be as experimental as the best of them. There are killer riffs on 'Institutional Man' and 'Hunter Of The Heart'.
'Angry Machines' is a great addition to the Dio canon - which one day is going to be universally recognised as one of the most vital and classic in rock history.