Last year I tried to find out what the lyrics meant. Although I only understand a bit of French, the words didn't seem to make sense to me. I recognized that the sounds didn't seem to be valid French words. I finally located the answer on the net. These aren't lyrics at all. They are the names of French cathedrals. I like this unexpected answer.
Today, when I visited YouTube to snag the embed code, I saw this explanation, which includes the "lyrics":
Those are indeed the words. Interesting, no? And the tune is beautiful.
Famous french nursery rhyme dating from the fifteenth century... The french original title is "Le carillon de Vendôme".