Description of Wales
By G. Cambrensis
Chapter Xiii
Of their symphonies and songs
In their musical concerts they do not sing in unison like the inhabitants of other countries, but in many different parts; so that in a company of singers, which one very frequently meets with in Wales, you will hear as many different parts and voices as there are performers, who all at length unite, with organic melody, in one consonance and the soft sweetness of B flat. In the northern district of Britain, beyond the Humber, and on the borders of Yorkshire, the inhabitants make use of the same kind of symphonious harmony, but with less variety; singing only in two parts, one murmuring in the base, the other warbling in the acute or treble. Neither of the two nations has acquired this peculiarity by art, but by long habit, which has rendered it natural and familiar; and the practice is now so firmly rooted in them, that it is unusual to hear a simple and single melody well sung; and, what is still more wonderful, the children, even from their infancy, sing in the same manner. As the English in general do not adopt this mode of singing, but only those of the northern countries, I believe that it was from the Danes and Norwegians, by whom these parts of the island were more frequently invaded, and held longer under their dominion, that the natives contracted their mode of singing as well as speaking.