A long time ago I had occasion to visit Wales and witnessed harmony singing at a very grand scale. But that may have been because a high percentage of individu

A long time ago I had occasion to visit Wales and witnessed harmony singing at a very grand scale. But that may have been because a high percentage of individuals were in smaller choir groups as part of local culture. And if only half of the entire singing crowd sings 2 to 3 harmony parts rather than the lead line, it sounds amazing. With a little practice from young age, it’s not too difficult to harmonize, if you know the lead line and have a sense of culturally common chord structures (also learned by immersion).