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Stephanie Lind, An Interactive Trichord Space in Pépin’s Toccate no. 3

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Figure 14. A second interpretation of the upper-voice pitch classes in measures 111–119

a. Understanding ‘distorted’ pitch classes as an indicator of a new grouping structure


 

b. Re-interpreting the progression as a product network,
eliminating repeated trichords and emphasizing the repetition of transformations

c. Re-interpreting the progression via a network-of-networks,
emphasizing the grouping structure of the passage