In message , Harry Bloomfield
writes
Harry Bloomfield brought next idea :
Now I have an earworm. I know the one you mean, later than that,
possibly 1980's/ 1990's.

This one? https://www.youtube.com/watch?v=E5vXTK2B3Yg

Thanks for the guess, but no, that sounds far too modern, which doesn't
necessarily mean that the one in my head is not fairly modern, but I
think it is older.

I'll try again.

Da da da da
(lower) da da da da da
da da da da
(lower) da da da da
da da, da da da, da da da, de da da da

Doesn't help much, does it? :-)

--
Graeme