Boy is that a stretch. I took a listen on Youtube and I hear almost no similarity whatsoever. If that was used by Courage as inspiration, it sure went off in its own direction.
Well, of course. Pastiche doesn't mean a copy, it means a stylistic homage. In this case, the similarities are in the chord structure and progressions, although Courage melded it with a bossa nova-style rhythm. Sometimes two pieces of music can have very different melodies but identical chord progressions (musicians call them "changes"), so that if you play them simultaneously, they fit seamlessly. (If "Blue Horizon" doesn't work for you, try "From Out of Nowhere." I believe Dennis McCarthy used it in the holodeck scenes of "The Big Goodbye" as an in-joke because its melody and chords were so similar to the Courage ST theme.)
I still remember when my musician father pointed out to me that the
Flintstones theme had what jazz musicians call "Rhythm changes," i.e. the same chord progressions and structure as the song "I Got Rhythm." The melodies are very different, and I'd never noticed a similarity, but if you play them (or imagine them) simultaneously, they mesh neatly, with the notes in one fitting into the gaps in the other, essentially.
I also remember when
Serenity came out, and people were hoping the original
Firefly theme song would be included in it. And there was an instrumental piece at the end of the closing credits that some fans swore was the
Firefly theme but other fans swore was nothing like it. That's because it had the same changes but a different enough melody to be legally a different piece of music. So people whose ear for music was based more on melody heard two different songs, while people whose ear was based more on harmony and structure heard two variations on the same song. I tend more toward the latter group, so it took me a few listens to figure out what was going on there.
All the Filmation music is sort of a post-60s acid jazz. Sometimes the atonality and dissonance is very very harsh.
Interesting. I grew up with that music, but I never thought of it as jazz -- and I don't even know what "acid jazz" is. (My father probably knew, but I guess we never really talked about the stylistic influences of Filmation music. Which is surprising, since I talked about my fondness for that music quite a bit, and he loved explaining stuff about music.)
Although different Filmation scores from Ellis and Prescott had different influences. I'd say
Flash Gordon and
Blackstar were influenced by classic movie-serial scores,
The New Adventures of the Lone Ranger by Westerns,
The New Adventures of Zorro by Latin music and again by old movie scores, etc.