One of my all time favourites is James Horner's score for
Star Trek II - The Wrath of Khan -
This was one of Horner's first movie scores before he became a big time movie score composer.
Two favourite tracks. First is
Battle in the Mutara Nebula -
Second is
Genesis Countdown which in the movie occurs right after the first one -
Those two tracks add real gravitas to a really good sci-fi movie, which was made on a very low budget after the commercial flop of
Star Trek: The Motion Picture.
Even after more than 43 years since it was released, I still to this day play those two track regularly.