What is unique about art genres? In this paper, I will show that genres are best understood as clusters of regulative rules for appreciation. Evaluation, interpretation, and other appreciative responses to a work of art are sensitive to how the work is categorised, and genres are the categories that play a normative role in this context. Genres as rules have social foundations and arise from a speech act that I distinguish from classification and call framing. Based on this account, I (...) will illustrate genre practices as social practices in which we declare and propose rules of appreciation to each other. (shrink)