"The Unperverted Pantomine" is a compilation of rarities from the band's early period-- single mixes, a radio show, and several live tracks. The material is all lovingly done, sounds great (clean sound, finally on a KJ record!), and is well chosen.
The studio material is certainly nice to have-- "Nervous System" is a funky dance piece, "Pssyche" is essential Killing Joke, rolling dance beat, thrashy guitar, and funky bass with a shouted vocal-- absolutely brilliant, "Follow the Leaders" with its original lyrics is more an oddity than anything else-- musically its no different. Ditto for the "Wardance" single version, which sounds like the album version with a different vocal take (or perhaps vocal production). "The Wait" demo is somewhat more interesting, but still doesn't significantly deviate from the original, although teh vocal is somewhat obnoxious.
The Capitol Radio show tracks are well performed, but beyond "Change", I'm not particularly impressed with the track selection-- they appeared to be going for an upbeat, dancey feel in the material, but neither "Are You Receiving" nor "Complications" are among the great KJ songs in my book.
The live show is superb-- lots of great stuff, topped off by a vicious "Wardance"-- the band is in full force on this one, just a monster. Most importantly, it sounds great-- one of my fears with an unreleased live recording from several years ago would be poor recording quality.
If you're a fan, get this, its a killer disc, but its not a good starting point, stick with the first two albums for that.