diaphony

In all parts of his work but one he uses the term diaphony as synonymous with symphony; _there_ he gives its ancient meaning of dissonance.

A Popular History of the Art of Music From the Earliest Times Until the Present 1874

Here we find St. Isidore employing the term diaphony in its original sense, as a Greek word, meaning dissonance -- a sense exactly opposite to that of Jean de Muris.

A Popular History of the Art of Music From the Earliest Times Until the Present 1874

The desire for harmony, that is, the simultaneous sounding with the cantus firmus, tenor, or theme, of one or more voices on different intervals, first found expression in the so-called diaphony or "Organum" of Hucbald (840-930 or 932).

The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery 1840-1916 1913

Hucbald the Fleming, and running their harmony in a kind of diaphony a fifth below the melody.

Spirit and Music H. Ernest Hunt

The contrary is the case in diaphony, which is the union of dissonant sounds. "

A Popular History of the Art of Music From the Earliest Times Until the Present 1874

Again, much of the modern rhythmical complexity strongly resembles, in essence, the machine-made experiments of mediaeval times; and the peculiarly fashionable trick of shifting identical chords up and down the scale -- the clothes'-peg conception of harmony, so to speak -- is a mere throw-back still farther, to Hucbald and the diaphony of a thousand years ago.

Recent Developments in European Thought Various

"Oxford History of Music" (1901), vol. I, p. 61, quotes from a treatise "De divisione naturae", by Scotus Erigena (d. 880), a passage, describing the organum, which would indicate that diaphony, even in the contrary motion, was in use in England previous to

The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery 1840-1916 1913

Coussemaker rendered great service to musical science by bringing to the notice of students the early development and history of harmony and counterpoint, as shown by the treatment of these divisions of music in that section of the "Musica Enchiriadis" in which diaphony is treated.

The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery 1840-1916 1913

He called his system an "organum" or "diaphony," and to sing according to his rules was called to "organize" or

Critical and Historical Essays Lectures delivered at Columbia University Edward MacDowell 1884

The difference between _discantus_ and _diaphony_ was that the latter consisted of several parts or voices, which, however, were more or less exact reproductions, at different pitch, of the principal or given melody, while the former was composed of entirely different melodic and rhythmic material.

Critical and Historical Essays Lectures delivered at Columbia University Edward MacDowell 1884