"Jim, haven't you heard the version, quite popular in fact, that features new verses as well"
I have - I even know one of the people who added to the song, I think they add nothing to it whatever, on the contrary, thy blunt its impact for me.
My opinion, of course.
On another aspect of audience interference.
We spent twenty years visiting Walter Pardon, England's last big repertoire traditional singer.
Waalter actually dropped two of his favourite songs (Old Brown's Daughter and Dark Eyed Sailor) from his public repertoire because of various audiences' practice of slowing down the last line of the choruses, leaving hi to stumble his way through the versions he grew up with as best he could.
Some audiences simply don't listen to what the singers are singers, so involved are they in what they are doing - that's simple bad manners.
Don't get me started about eejits who join in the verses uninvited - open season material or what?
Jim Carroll