Vincent P. Benitez, "Simultaneous Contrast and Additive Designs in Olivier Messiaen’s Opera"

Example 9. Contrasting Additive Design (Pitch/Timbral Opposition): Two Active Parts, Avian Commentary on "Perfect Joy," La Croix, R66:6-9 [DjVu Format]
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Reproduced with the kind authorization of Editions Alphonse Leduc, proprietary editor worldwide, Paris, France.