I think it fell out of fashion because it was, for too long, WAY over-done by choirs. Same with Myfanwy.

I've been in song sessions and had tourists or 'people from away' butt in requesting them endlessly. Usually makes us all the more determined not to sing them. Which I guess is a pity because there's nothing really wrong with them, but they've become so much part of a Welsh stereotype ...

sian