This is the most recent evidence that they tried to do anything with unfinished versions. Yes, they have done remasters and spread the tracks across 2 vinyls, etc... but in terms of comparing audio from the show vinyl, the instrumentals on this cassette, and the numerous bootlegs that have followed, there is no difference. It only exists on the original reel to reels, and they only have 1 of those because it was provided by a journalist doing a story on Matt Dike.