Neat and Tidy Simon,
I went looking for this because a guitarist I knew called Steve Waller did the 'incidental music' for this. He said it was the easiest thing he'd done for years. Because they sat him in a room with his guitar - he played a lot of slide -and he'd just do stuff to fit in with the action. He said it played in the States, but he didn't think it had played in the UK. Apparently it never got much past the pilot stage. I've checked it our a number of times and it's kinda cool to know that it really did exist! From the way you describe it, it sounds great!!