Well, here is Shay's reply.

Hi Gary,
>
>You know, I don't recognize this one. Stan knew so many songs, and
>he would often sing his favorites, but sometimes he would pull one
>up from the depths and remember it exactly, often a song that none
>of us afficionados had ever heard.
>
>Sorry I'm not of more use here.
>
>Let's try Peter.
>
>~ Shay

So he has copied Peter, (known here as Chantyranger). Peter may have come across this over the years.

Gary