Under Wheels of Confusion is a 1996 compilation album from Black Sabbath.
The album covers the years 1970–1987 (specifically, every album from Black Sabbath to The Eternal Idol).
Stephen Erlewine from AllMusic called the it "an unwieldy four-disc, 52-track box set".
He also opined that it "dipped considerably in quality during the second half of the set, when Ozzy Osbourne left the group and was replaced by Ronnie James Dio ... and even though all of the stone-cold classics are here, as are all of Dio's best tracks, Sabbath remains best appreciated through their original albums, which capture the essence of the metal giants much better than this box".
[1] British musician Andy Gill said this is "the one you've been waiting for ... four CDs, 52 tracks, Miltonesque biography, Pete Frame family tree, graveyard graphics, heavy-duty cardboard box - definitive evidence that if the Devil has the best tunes, then Birmingham has the bludgeoning riffs ... executed with pizzazz and facility by the spawn of Beelzebub".