Here is my own Spotify playlist of inspirational Traveller music. I had a different set of criteria than you, it seems. For me, I only chose music released on or before the second printing of the CT basic set. These are songs that Marc Miller MIGHT have listened to as he was writing the rules books.
That is a good list you have there. I didn’t want to include themes from science fiction movies (and TV) in my list. But there are a few that are really good. I was looking for “The Ballad of Serenity” by Sonny Rhodes, but could only find covers that I didn’t like.
After seeing your list I will look for a good version of “Also sprach Zarathustra” and maybe also “the Imperial March”.