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Kyle Adams A New Theory of Chromaticism
Suspended diatonicism arising from consecutive semitones. The most frequent
case of suspended diatonicism occurs when there is a buildup of consecutive
semitones in more than one voice, which can blur the distinction between
diatonic and chromatic semitones and make the identification of a single
tonal system impossible. As with juxtaposed diatonicism, the perception of
suspended diatonicism depends largely on context. Example 19, from Cuore
che reprime alle lingua di manifestare il nome della sua cara by Barbara Strozzi, is
not an example of suspended diatonicism, although it contains consecutive
semitones in both voices.
The bass progression in mm. 175–77, which chromatically fills in a per-
fect fifth, has an audible distinction between diatonic and chromatic tones
because the preceding passages have been governed exclusively by the natu-
ral system. The D≥, C≥, and B≤ are therefore type B alterations, and, having
been perceived as type B alterations in the bass, they will also be perceived as
such in the soprano in m. 176ff. The cadence on A in the natural system in
mm. 178–79 contextualizes the chromatic tones in the bass of the following
bars as type B alterations, and, having been chromatic in the bass, they are
chromatic in the soprano.
In Example 20, on the other hand, suspended diatonicism does occur
because there have not been enough tones sounding to establish a single tonal
system. The example gives a reduction of the first ten measures of the Fantasie
ex D by Claudio de Monteforte.
Stages 1 and 2 of the reduction have been omitted for the first four
measures. This is because the nature of suspended diatonicism is a lack of an
audible distinction between diatonic and chromatic tones; it is impossible in
such circumstances to distinguish among different types of chromatic tones.
Instead, the single staff below the score carries no signature at all until m. 5,
when the analysis proceeds as usual.
In the first four bars, only the tones D and A can be perceived as dia-
tonic, and this is only because they each have twice the value of the other
tones. D begins the piece, and A is the first important metrical point of arrival.
It is safe to assume, therefore, that the listener would perceive these tones as
diatonic, or at least more stable than the others. But two diatonic tones do not
constitute a tonal system. True, the listener will most likely perceive the D as a
adams_18 (code) /home/jobs/journals/jmt/j8/4_adams Wed May 5 12:13 2010 Rev.2.14 100% By: bonnie Page 1 of 1 pages
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JMT 53:2 A-R Job 149-8 Adams Example 18
Example 18. Alternate version of Passagagli