Beware of what? Well, others have misdiagnosed this CD - I'll tell you what's wrong with it. It doesn't contain re-recordings but rather remixes!
There was a budget price label, whose name escapes me,. that went round remixing - or should I say - despoiling all its classic '60s/'70s material, by adding extra instrumentation that not only tended to clash with the sound of the original but never seemed to be absolutely in sync!
And that's what you have here. It could be worse - at least Keith and the guitarists come through loud and clear, but...why on earth would a person settle for this when the originals are very/fairly easy to locate?