So if you've read Brian's soapbox lately you've seen his retrospective of making Flash. I found this bit particularly interesting.
"The carte blanche thing gave me another idea. I realised that if they would give me all the 'sprocket' reels with Orchestra,Dialogue, and Sound effects, I could effectively make a potted sound version of the whole film for the soundtrack album.And compress it all still further to make a single, which would evoke the whole stor of the film. To my knowledge, nobody ever did that before."
I never knew that Brian was the one who had the idea of putting the movie dialogue and sound effects in the soundtrack. I'd always wanted to hear the soundtrack sans dialogue, personally.
Also, trying to figure out the extra hidden piece embedded in the Wedding March...