Hi all. Inexplicably, my laptop has in some way reverted to allowing me to see the Oolite BB again after I don't know how many months (at least a few years)
To the question at hand though, and I'm probably quite off the mark, but I remember a TV (BBC maybe) mini series when I was a teen (sometime in the late seventies early eighties), which could have had that sort of suspenseful music. But having seen the original movie, which might or might not have had some similar suspenseful pipe organ chord progression, but was filmed well before the 70's - then I'm not so sure.
Anyway, and attempt1 (without Shazzwhatsit), my guess is for 'Day of the Triffids', John Wyndham - who I
consider one of the greats (he effectively got me started in SciFi)
In my musical defense and for the obscure tie-in value, 'The Triffids' were a popular club band in Perth (downunder) in the 70's - not that they wrote organ score!... and they weren't what I would call one of the greats.
However with a bit of sidetracked searching I did find the name Wendy (born Walter) Carlos who wrote the score for 'A Clockwork Orange' for an Organ, which puts the movie in the right decade, but alas not the book.
So I stick with DOTT and have to draw a blank on the music.
edit: <--- oooh, 'Elite'