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Influence of Art on Music.—All of the fine arts, with the exception of Music had, by the year 1100, reached a fairly high stage of development due, no doubt, to the fact that they are to a great extent composed of concrete materials. Music, owing to its lack of the concrete and the inability of men literally to place their hands upon its material, had lagged behind, so that in 1100 we find only a small amount of material, and that in a most chaotic condition. This material was, however, sufficient to produce definite musical forms if united into a homogeneous whole; such a state, however, could be produced only as the result of some great influence which would galvanize the component parts into action. Fortunately, there was just such an influence, one which had passed through an evolution similar to that needed in music, though because of its more concrete form and its necessity to man, this evolution had occurred at a proportionately earlier date. This influence was an art form, a phase of architecture known as the Gothic. Gothic architecture was a form built up by the unifying of the principal styles of architecture into one uniform whole, and composed of a multiplicity of details, but of such evident relation to each other as to make a distinct art form. This form was first used in Paris about the year 1000 A. D. Music was, approximately, in the same condition as Architecture before the birth of the Gothic principle, and needed a stimulus, a comrade art undergoing much the same evolution, to start it on its path of polyphonic development. In the year 1100 musical chaos became united into one uniform art by means of Measured Music or Proportion, thus allowing the systematizing of the mass of then existing material, and the construction of definite art forms. Since Architecture had undergone just such a change one century before, it is more than probable that the effect of this change was the starting of a similar one in Music, though the result was not to show until one hundred years after its occurrence in the kindred art.

Paris the Centre of Europe.—It was natural that these two great changes should take place in Paris, at that time the centre of wealth and learning for all Europe. Paris, in addition to its many other advantages, had long possessed a great university which had produced many scholars and theologians. The influence of the Church in all art was then paramount, for all art was employed in the service of the Church; Architecture gave to the Church its Gothic cathedrals; Painting and Frescoing its marvelous interior decorations; while Music made possible the richer forms of the service or liturgy. In that sense the Church, in its centre of theological study, would undoubtedly react on the practice of music and produce more beautiful forms for the service. In this period it is worthy of note that all the famous musicians, as before, were monks, or men employed in the Church, and the reason for this condition is plain: there was no art of music outside of the Church.

Measured Music.—Just as the use of many voices produced singing in parts, so did it produce Measured Music. To make it possible to use more than two parts at the same time it was necessary to have some definite agreement as to the value of the notes, in order to have certain uniform times for beginning, ending and performing the different portions of a composition agreeably; and so Measured Music was born. It may be said here that the different metrical divisions were not shown by means of bar lines as we now use them, but by different groupings of the notes, the time value of each depending on its relative position to the others. Perhaps of all forms produced by this system, the Organum Purum was the earliest and most peculiar. It consisted of a Cantus Firmus set to words, and metrical in form; a second voice freely extemporized a higher part, evidently the only rule being that the two finish together. At a late date, strict Discant sometimes alternated with the old Organum, making it much less free in character.

The Important Forms.—In reality, the important forms produced were entirely in strict metrical divisions. Of these, the most important were the so-called strict Organum, the Conductus, the Roundel and the Motet. Of the strict Organum very little is known, excepting that it was a strictly metrical form, differing, in that sense only, from the Organum Purum; it had also words for all parts and not only for the Cantus Firmus, as had the older forms. The Conductus, from the Latin conducere, to conduct, was important, and was a secular form having as its basis a popular melody or a newly invented one, secular words and much freer intervals than church compositions. Each part was expected to be melodious; and it varied from two to four in the number of voices used. It was sung during a march, a funeral cortège or procession.

[Listen.]

Conductus for three voices showing that each part is a distinct melody. Oxford History of Music, Vol. I.

The Roundel, from an historical view-point, was the most important form, for in it much use was made of Imitation. It can best be explained in the words of Walter Odington, a theorist of the time: “Let a melody, with or without a text, in one of the regular modes of rhythm, and as beautiful as possible, be devised, and let each voice sing this in turn. And at the same time let other melodies be devised to accompany it in the second and (if there be three voices) in the third voice; let them proceed in consonances, and so that when one voice ascends another descends, and let the third not follow too closely the movement of either of the others, except perhaps for the sake of greater beauty. And let all of these melodies be sung by each voice in turn.” While the use of Imitation is important in that it recognizes the repetition of a set phrase as an aid to Unity, its importance is detracted from, at least at this period, because it was not used in any of the other forms then in vogue.