HELP NEEDED finding a music library track from the 1980s

[medusa]

Hello.
I've been trying to find the original track used in the 1988 logo opening of the British distributor Medusa Pictures (aka Medusa Communications, Ltd.) on their VHS tapes, after I figured out that it was a stock library track and not an original composition. (Edit: this has been CONFIRMED by the co-founder of the company!)

It is 12 or 13 seconds long.
You can listen to it here:

Does anyone know if and how I might be able to find the exact track in its original library? Given the immense size of these 1980s music libraries I'm probably just looking for a needle in a haystack, but it might be worth it.
Thanks in advance to anyone who might be helpful.