This article places the recent turn to affect into conversation with a parallel movement that took place in eighteenth-century music theory. Because theorists in that period struggled to explain how music functioned as a sign, they began to propose an alternative, materialist theory of vibrational attunement in order to account for music’s affective power. By refracting contemporary affect theory through this historical antecedent, the essay argues for renewed attention to the objects in the world that generate affects in subjects.

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