We have been into all this before, about how any song in common metre, allowing for variations between 4343- and 4444- stressed lines, i e ballad metre, can be sung to the tune of any other. Sometimes, from this, you will get changes in the classic settings regarded as appropriate, as eg the tune of Fause Foodrage has become associated ubiquitously with Willie-o-Winsbury bacause someone by misapprehension recorded it so ~~ forget who, but it's all in one of the threads somewhere. So now try singing BGW to that & you will find it goes perfectly well. So it is in fact mainly convention that assocs one ballad tune with one set of words; & BGW could be sung to any of those with the 4444 metre.

We have had lots of threads on this.

~M~