Tales of Unease → Calculated Nightmare → 1970 → Title sequence and intro →

"Two business executives are trapped for the night on a deserted office floor by a disgruntled employee who has hacked the elevator system" ...
Directed by John Reardon. Writing Credits (in alphabetical order) John Burke ... (writer). Cast (in credits order) Ursula Mohan ... Moira, Larry Dann ... Dave, Michael Culver ... Johnson, John Stratton ... Harker, Peter Madden ... Flint. Produced by Paul Knight ... producer, Peter Wildeblood ... executive producer. Production Design by Eric Shedden. Music Department: George Martin, composer: theme music "Eary Feary" (uncredited).
Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

[@Miler97487]

George Martin did this piece. I never knew he would record anything like this! Not being British I first heard this on an American UFO documentary called Overlords of the UFO (1976). I also noticed it being used on a Magnavox Odyssey TV ad, but Tales of Unease is where this piece originated.

[@glennhoddle10]

The theme would probably scare the crap out of kids.