Hi Noel,
A very interesting adaptation.
I've been a Seekers fan since the 60s, and I've seen them live a number of times.
Judith, in my opinion, has one of the purest voices I have ever heard. I last saw The Seekers about 3 years ago, and they sounded exactly like they did in the 1960s, although they are now all in their 70s.

Two stories that they told during the last concert I saw: one of their most requested songs was "Puff the Magic Dragon" ... funny thing is that they never recorded it until many years later. They got sick of saying "No, that was Peter,Paul & Mary," https://www.youtube.com/watch?v=jvZVBpOcmgw
The second story is when they were in London, at a recording session,and they ran into Barry Gibb (The Bee Gees), Barry said he'd written a song that they might like to record; after listening to it The Seekers declined, so the Bee Gees recorder it instead.
The song..... Massachusetts.

https://www.youtube.com/watch?v=CUfUNNN68eQ&list=RDCUfUNNN68eQ&start_radio=1&t=0

But my favourite Seekers song .... https://www.youtube.com/watch?v=ZOlPCmFG2pc

PS I hope you're coping okay with the dreadful situation in Victoria at the moment.

Cheers,
Keith