I have only ever heard one tune.... I can't even remember when I first heard it, but I sort of knew it before I moved east. When I visited the Wash DC area to attend the National Folk Festival.. then held at the Wolf Trap Farm Park in Virginia, near DC... I volunteered to help make sandwiches and such for the performers, and thus got a 'badge' to have access to the area under the stage where performers wandered about.

Thus, I was hanging out near a passageway when Jon Eberhart, a founder of FSGW, and Jon Bartlett of British Columbia (on the program and who had sometimes posted here at Mudcat) somehow got up on a tiny, low stage and started singing Thais. They had gotten thru maybe a third of it when Helen Schneyer, she of more wonderful songs than I can list, came down the passageway, almost clanking with her turquoise jewelry.
   She came by... stopped... turned and stared at them for about 3-4 seconds, and said "Oh my God... they BOTH know it!".. and clanked
away.

   Since then, I have sung the thing 3-4 times for one event or another.... sometimes forgetting the last verse. The last time was 'about' 3 years ago at the monthly open sing.
   They never missed a word