Well, I just went Googling and came up with a TINY fragment of the song that sounded VERY familiar!!
It is on a Bok/Muir/Trickett recording "So Will We Yet"(?), but was written by gay civil rights activist (a singer and quaker,too) BAYARD RUSTIN (1912-1987)

So WHO set Oscar to this piece??? Was it the mysterious Chris Couveau in PA?
Or, was it the deceased Colin Dryden, Down Under (no, NOT from the grave!! In OZ, I mean!!) No, maybe not, he would've been too young perhaps ...

Anyone any clues please?

Cheers!
R-J