Speaking of unused music, the final TMP/TNG theme itself was almost different:
https://www.youtube.com/watch?v=BbdhC-OXXa0
There’s an interview where they tell stories, and apparently after they made this early version of the music, Robert Wise listened to it and gave the best three word critique ever - “There’s no theme!”
Goldsmith basically went “…oh.”, then went back and reworked what he had already into the 2nd version, and there you go that’s the final theme.
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