> How could you say that the 2nd disc is non essential? It's actually
> essential because most of us didn't know an early alternate version of the
> score had been recorded. It also seems too that the cues for BTTF from the
> John Debney Varèse re-recording were for the most part based off the early
> version of the score.
The differences are subtle, and the overall experience is a little more dark and not as enjoyable as the finished product.
But I'm not saying you're best left without the second CD. I'm just saying that the first is the one you can play over and over, while the second one is for casual appreciation.