Then the tenors took up A, the altos went on to B, the trebles went
on to a new phrase C, until ultimately, if we lettered each
successive phrase that appeared, we should get clear away from the
beginning of the alphabet to X, Y, and Z. This, of course, is a crude
and stiff way of describing the process of weaving and interweaving by
which the old music was spun, for often the phrase A would come up
again and again in one section of a composition and sometimes
throughout the whole, and strict canon was comparatively rare in music
which was not called by that name; but the description will serve.
This technique proved admirable for vocal polyphony--how admirable we
have all the Flemish and Italian and English contrapuntal music to
show. But it was no longer available when music was wanted for the
single voice, unless that voice was treated as one of several real
parts, the others being placed in the accompaniment. A new technique
was therefore wanted. For that new technique the new composers went
back to the oldest technique of all. The old minstrels used music as a
means of giving accent and force to their poems; and now, as a means
of spinning a web of tone which should not only be beautiful, but also
give utterance to the feeling of the poem, composers went back to the
method of the minstrels.
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