What's aesthetically interesting or significant about electronic dance music? The first answer I consider here is that dancing is significant. Using literature on groove, dance and expression, I sketch an account of club dancing as expressive activity. I next consider the aesthetic achievements of DJs, introducing two conceptions of what they do. These thoughts lead to discussions of dance music's ontology. I suggest that the fundamental work of dance music is the mix and that mixes require their own ontology, distinct (...) from ontologies of recordings or improvisations. Finally, I explore two aspects of dance music's aesthetics: its connection with repetition and repetitiveness and its use of electronic sounds and technologies. I conclude with some speculative thoughts about the unique relation dance music bears to repetition and electronics. This article is Part II of two; in Part I, I consider the problem of defining dance music, via the framing question of authenticity. I explore history, genre, scenes and subcultures, and blackness. (shrink)