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Cambiata, or ''nota cambiata'' (Italian for ''changed note''), has a number of different and related meanings. Generally it refers to a pattern in a homophonic or polyphonic (and usually contrapuntal) setting where a note is skipped from in one direction and this is followed by motion in the opposite direction, and where either the note skipped from is distinguished as a dissonance or the note skipped to is distinguished as a non-harmonic or non-chordal tone. With regards to pedagogical, species counterpoint, it refers to a more specific set of patterns. ==In species counterpoint== In species counterpoint, the dissonant cambiata can be called an ''idiom'' in that it is considered an acceptable pattern even though it breaks a rule, in this case, that of skipping from a dissonance. The dissonance in the dissonant cambiata is approached by descending step and occurs on a weak half or quarter of the beat; the skip from the dissonance must be a descending third to a consonance; and this consonance must be followed by some number of ascending steps. This means there are only three possible essential dissonant cambiatas in third species: Two above the cantus firmus, with vertical intervals 8-7-5-6 (Ex.1) and 6-b5-3-4 (Ex.2); and one below the C.F., with 3-4-6-5 (Ex.3). The consonant cambiata is not considered an idiom like the dissonant version as it does not break any rules of species counterpoint by itself. There are two consonant cambiatas in third species: One above the C.F., with 6-5-3-4; and one below, with 5-6-8-7. Whereas, when dealing with species counterpoint, the dissonant cambiata is frequently called, simply, cambiata, the consonant cambiata is rarely called cambiata at all. The inverted cambiata is a cambiata where the melodic movement of the contrapunctus is inverted; where the dissonant cambiata has a skip down a third, the inverted cambiata has a skip up a third, etc. There are both dissonant and consonant inverted cambiatas. There are three dissonant inverted cambiatas in third species: One above the C.F., with 3-4-6-5; and two below, with 8-7-5-6 and 6-b5-3-4. There are two consonant inverted cambiatas in third species: One above the C.F., with 5-6-8-7; and one below, with 6-5-3-4. In fifth species, cambiatas need not be quarter-note lines added to whole-note cantus firmi as in these examples, which is only a requirement of the third species, but could take many different rhythmic forms. Rhythmically, it is only essential that the dissonance that is skipped from be in a weak position, when not considering any other rules which may apply. This means further that the cambiatas need not have the same pattern of vertical intervals that the cambiatas in third species have. Example 4 shows a dissonant cambiata in fifth species. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cambiata」の詳細全文を読む スポンサード リンク
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