Hayes & Kaun (1996) argue that the mapping of syllables onto a metrical grid in textsetting is sensitive to natural duration, not just categorical weight (heavy or light). Most of their evidence, however, derives the final lengthening effects, which admit of another possible analysis (Halle 2004). Drawing on a corpus of 2,371 popular songs in English, I confirm that even when one controls for final lengthening and other factors, the setting of syllables to a discrete grid is sensitive to natural duration. Moreover, onset effects reveal that the domain of weight for textsetting is not the syllable, rime, or vowel-to-vowel interval, but rather the interval between p-centers (perceptual centers). Finally, I argue that the textsetting grammar invokes both natural duration and categorical weight; weight mapping cannot be reduced to one or the other.
