Track ID help: Electronic instrumental from 1976 Spielberg news segment

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I'm looking for a track featured in this video:
https://youtu.be/g1FUNVlZIW4

It's an electronic piece with electric chords, you can hear it at these timestamps: 2:14, 3:33, 7:12
(It is not the track "Reflections" by Eric Siday, nor "Suspended Martenot" which I know.)

I'm almost certain I’ve heard it in some old TV series or documentary, but I can't which one. The music has a vintage, experimental sci-fi or mystery vibe typical of programs from the '70s. Also, I'm looking for the track at 6:43.

I tried with Shazam and other apps but it didn't work. If anyone knows these tracks, I’d really appreciate it!