Metric Dissonance in Non-Isochronous Meters Page: 83
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phrase."53 Furthermore, he distinguishes phrase from hypermeter, which is analogous to Lerdahl
and Jackendoff's distinguishing between grouping and metric structures. For the phrase
boundaries and hypermeters in the A section, two of Lerdahl and Jackendoff's preference rules
are relevant: MPR 1 (Parallelism) and MPR 2 (Strong Beat Early). MPR 1 (Parallelism) states:
"Where two or more groups or parts of groups can be construed as parallel, they preferably
receive parallel metrical structure."54 MPR 2 (Strong Beat Early) states: "Weakly prefer a
metrical structure in which the strongest beat in a group appears relatively early in the group."55
In the A section (Example 6.1), the left- and right-hand melodies' phrases become offset
and contribute to the temporal instability that accompanies the transition from meter to ameter.
Taken in isolation, the right-hand phrases are consistent and fairly stable. The melody, delineated
by accented attacks only on white keys, traverses repeated subphrase and hypermetrical
groupings of 4+4+6 measures until the end of the section. Each 4+4+6 phrase resembles a
sentence, where the first four measures constitute the basic idea, the second four the repetition of
the basic idea, and the last six the continuation. The two basic ideas are rhythmically identical-
characterized by eighth-note groupings of 3+5, 3+5, 5+3, and a full measure. Although the
second basic idea is not an exact transposition of the first basic idea, it follows the same
contour-a common deviation occurring in sentence structures. The six-measure continuation
begins rhythmically like the basic idea, grouped 3+5, 3+5, 5+3, but the fourth measure continues
with 3+5, 5+3, 3+5 instead of the single full-measure group. The parallelism (MPR 1) that
occurs at the beginnings of each phrase determines the phrase boundaries, and the preference for
strong beats to occur early in a group (MPR 2) helps determine the hypermetric beats. In this
53 William Rothstein, Phrase Rhythm in Tonal Music (New York: Schirmer Books 1989), 5.
54 Lerdahl and Jackendoff, 75.
55 Ibid., 76.
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Smith, Jayson. Metric Dissonance in Non-Isochronous Meters, dissertation, August 2018; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc1248499/m1/94/: accessed April 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; .