Two Greek myths attest to the power of music to blur distinctions between humans and nonhumans: Orpheus made music that inspired human-like attention in animals, trees, and stones, while the Sirens reduced passing sailors to the level of animals incapable of resisting their song. Recast in terms employed by Lacan, these myths portray music as calling forth a response in creatures thought merely able to react and, contrariwise, stripping away the capacity for response in humans, leaving nothing but reaction in (...) its place. Critiquing Lacan’s dogmatic distinction between human and animal behavior, Derrida questioned the “purity and indivisibility” of reaction and response and recommended that critics explore the involvement of both in “the whole differentiated field of experience and of a world of life-forms.” In this essay, I take up Derrida’s challenge with regard to music as it has been understood in the European aesthetic tradition. While music has long been considered capable of provoking highly refined cognitive and emotional responses, it also acts upon the body in a wide variety of ways, many of them involuntary – a fact that has struck music’s advocates as alternately promising and disturbing. Revisiting eighteenth- and nineteenth-century commentaries by the philosophers and critics Johann Georg Sulzer, Johann Gottfried Herder, and Eduard Hanslick, I first illuminate persistent anxieties over the admixture of reaction and response in musical listening. I then turn to recent ethological studies in order to argue against any decisive separation of the human from the nonhuman in the arena of musical aesthetics. (shrink)