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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(1) A term that refers to tones that are the same degree of the chromatic scale but are named and written differently (for example, F sharp and G flat), to intervals consisting of the same tones but “spelled” differently (for example, major sixth and diminished seventh), to chords that are tonally but not harmonically equivalent (for example, a diminished seventh chord in which 1–3 notes undergo an enharmonic substitution becomes one of the inversions of the other diminished seventh chords), or to keys that are tonally but not harmonically equivalent (F sharp major and G flat major). The concept of enharmonic tones came about as a result of equal temperament, in which the octave is divided into 12 equal semitones; it allows the composer to make use of enharmonic modulation, a change of key made by altering enharmonically one or two notes of a chord, thereby changing the chord’s harmonic meaning and inducing a different progression.

(2) One of the ancient Greek scale forms, a tonality that included intervals of approximately a quarter tone.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Included is full notations with enharmonic chord symbols for more than 150 choruses of jazz blues lines in all 12 keys, using the whole register of the instrument.
Clothed notables included Charles Olson on the cover of Niagara Frontier Review, 1964, lecturing at a blackboard where a chalked spiral spins out the words EMBODIMENT and ENHARMONIC, and an album called Dial-a-Poem Poets: Totally Corrupt, 1972, whose cover places Waldman, Giorno, Allen Ginsberg, and Robert Creeley around a boardroom table with William S.
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Marchetto further provoked Prosdocimo's ire by applying traditional terms such as enharmonic, chromatic, and diatonic in unconventional ways to his newly defined intervals.
"Possent" in this case refers to the subject of Bacon's previous discussion about enharmonic music (enharmonicus) and its many layers (multos gradus).
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176) just as his preceding remarks about the "enharmonic" element (p.
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The tone that provides the chromatic enticement, although enharmonic with G[??], is written out in the score most often as A[??] and thus falls outside the aeolian scale.
These absurdities (from today's point of view) were removed, but this sometimes caused displeasure, as did enharmonic changes of individual notes and sometimes whole passages from double flat or double sharp to simpler notated form (obviously sounding exactly the same).
These measures clearly demonstrate that the focus of the movement is the alternation between G[MUSICAL NOTES NOT REPRODUCIBLE IN ASCII] Lydian and A[MUSICAL NOTES NOT REPRODUCIBLE IN ASCII] Phrygian, and the enharmonic equivalence between D[MUSICAL NOTES NOT REPRODUCIBLE IN ASCII] and E[MUSICAL NOTES NOT REPRODUCIBLE IN ASCII].

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