This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1779 edition. Excerpt: ... modes. them, as it was in them to plagal. Authentic, differ about it. The material %v(. 8w. point is, if we can sind it, to / A t know what they meant by (-- these distinctions, and what stth. ith, 4th. was the real use of them in '--" x--" music j but even here where g... c---g--c j-ey ought to have ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1779 edition. Excerpt: ... modes. them, as it was in them to plagal. Authentic, differ about it. The material %v(. 8w. point is, if we can sind it, to / A t know what they meant by (-- these distinctions, and what stth. ith, 4th. was the real use of them in '--" x--" music j but even here where g... c---g--c j-ey ought to have agreed, we a... d--a--d sincj tney differed. The best b e--b e account to be given of it is c--/--c--/ this: They considered that an i--g--d--g gve which wants a 4th or 5th, e--a t--a js impersect; these being the concords next to 8ve, the song ought to touch these chords most frequently and remarkably; and because their concord is different, which makes the melody different, they established by this two modes in every natural octave, that had a true 4th and 5th: then if the long was carried as far as the octave above, it was called a persect mode; if less, as to the 4th or 5th, it was impersect; if it moved both above and below, it was called a mixt mode: thus some authors speak about these modes. Others considering how indispenfable a chord the 5th is in every mode, they took for the sinal or key-note in the arithmetically divided octaves, not the lowest chord of that octave, but that very 4th; for example, the octave g is arithmetically divided thus, g-c. g, c is a 4th above the lower g, and a 5th below the upper g, this c therefore they made the sinal chord of the mode, which therefore properly speaking is c and not g; the only difference then in this method, between the authentic and plagal modes is, that the authentic goes above its sinal to the octave, the other ascends a 5th, and descends a 4th, which will indeed be attended with different effects, but the mode is essentially the fame, having the fame sinal to which all...
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