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See also:PLAIN See also:SONG, or PLAIN See also:CHANT (Gregorian See also:Music; See also:Lat. cant us planus; Ital. See also:canto gregoriano; Fr. plain chant)
, a See also:style of unisonous See also:music, easily recognizable by certain strongly marked characteristics, some very See also:ancient fragments of which are believed to have been in use under the Jewish See also:dispensation from a remote See also:period, and to have been thence transferred to the See also:ritual of the See also:Christian See also: Plagat Modes . 2 . Hypodorian, A, C, *D, E, , G, A . 4• HYPophrygian, B, D, *E, F , G, A, B . 6 . Hypolydian, C, D, E,**F, G, A, B, 8 . Hypomixolydian, D, E F*G,A,B C, D. ro . Hypoaeolian, E, F, G, *A, B, C, D, E . 12 . Hypolocrisn, F, G, A,*B, , D, E, 14 . Hypoionian, G, A, B, D, E F, G . Nos .
1t and t2 in this series are rejected, for technical reasons into which we have not space to enter ; they are practically useless
?
Of these modes Ambrose used four only—the first four " authentic modes," now numbered r, 3, 5 and 7
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Gregory acknowledged, and is said by some historians of See also:credit to have invented, the first four " plagal modes "—Nos
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2, 4, 6 and 8
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The use of the remaining " modes," except perhaps the ninth, was not formally authorized until the reign of See also:Charlemagne, who published an See also:official decision upon the subject
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In one or other of the twelve " modes " recognized by this decision every plain-chant See also:melody is composed
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The number of such melodies preserved to us, the genuineness of which is undoubted, is very large; and the collection is divided into several distinct classes, the most important of which are the melodies proper to the See also:Psalm-Tones and Antiphons; the Ordinarium Missae, the Introits, Graduals and Offertoria; the Praefationes, Versiculi and Responsoria; the See also:Hymns and Sequences; and the Lamentationes, Exultet and other music used in See also:Holy See also:Week
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Of these classes the most interesting by far is that which includes the psalm-tones, or psalm-tunes, called by modern English historians, the " Gregorian tones." The See also:oldest of these are tones r, 3, 5 and 7, as sung by Ambrose
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The antiquity of tones 2, 4, 6 and 8 is less firmly established, though there is no doubt that Gregory the Great sanctioned their use on strong traditional See also:evidence
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In addition to these, a peculiarly beautiful melody in mode 9, known as the Tonus peregrinvus, has been sung from See also:time immemorial only to the psalm In exitu See also:Israel
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1 Analogous to the tonic or See also: The oldest version of this melody now extant is undoubtedly to a certain extent impure; but tradition imputes to it a very high antiquity, and even our doubts as to the authenticity of the now generally accepted See also:reading extend only to one single note . A widely accepted tradition points out this melody as the tune sung to In exitu Israel, as See also:part of the Great See also:Hallel (see PSALMS), which is generally (but hardly rightly) identified with the hymn sung by See also:Christ and His apostles immediately after the Last Supper . One very powerful See also:argument in favour of the Jewish origin of the psalm-tones lies in the peculiarity of their construction . It is impossible to ignore the perfect See also:adaptation of these venerable melodies to the See also:laws of See also:Hebrew See also:poetry, as opposed to those which governed Greek and Latin See also:verse . The See also:division of the tune into two distinct strains, exactly balancing each other, points assuredly to the intention of singing it to the two contrasted phrases which, inseparable from the constitution of a Hebrew verse, find no place in any later form of poetry . And it is very remarkable that this constructional peculiarity was never imitated, either in the earliest hymns or antiphons we possess or in those of the middle ages—evidently because it was found impossible to adapt it to any See also:medieval form of verse—even to the Te Deum, which, though a See also:manifest See also:reproduction of the Hebrew psalm, was adapted by Ambrose to a melody of very different formation, and naturally so since so many of its phrases consist of a single clause only, balanced in the following verse . This peculiarity now passes for the most part unnoticed; and the Te Deum is constantly sung to a psalm-See also:tone, very much to the detriment of both . But in the middle ages this abuse was unknown; and so it came to pass that, until the " School of the Restoration " gave See also:birth, in See also:England, to the single chant, avowedly built upon the lines of its Gregorian predecessor, and a somewhat later period to the See also:double one, so constructed as to weld two verses of the psalm into one, often with utter disregard to the sense of the words, the venerable psalm-tones stood quite alone—the only melodies in existence to which the psalms could be chanted . And so intimate is the adaptation of these plain-chant melodies to the See also:rhythm as well as to the sense of the sacred See also:text, even after its See also:translation into more modern See also:languages, so strongly do they See also:swing with the one and emphasize the other, that it is difficult to believe that the See also:composition of the music was not coeval with that of the poetry . Next in antiquity to the psalm-tones are the melodies adapted to the antiphons, the offertoria, the graduals and the introits, sung at High See also:Mass . Those proper to the Ordinarium missae are probably of later date . Those belonging to hymns and sequences are of all ages .
Among the latest we possess—perhaps the very latest of any great importance—is that of Lauds See also:Sion, a very See also:fine one, in modes 7 and 8, adapted to the celebrated sequence written by See also: |
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