The philosophical significance of rhythm in the United States has been undermined from both sides of what Adorno and Horkheimer called the ‘dialectic of enlightenment’. When rhythm has not been falsely exalted, promising a fetishised, racialised ‘return’ to the body, it has been devalued through the tainted associations of rhythmic synchronisation with fascist regimes and the demand for compliance. In this article, I engage these issues as they inflect the politics of musical form. Adorno’s notorious critique of jazz – developed (...) across a wide range of essays spanning three decades (1933-1962) – has been rightly disparaged, but his concept of the politics of metric regularity has not been repudiated. In what follows, I provide an analysis of how metric regularity works for Adorno as a concept – its limitations and presuppositions. Adorno opens up new critical thought about rhythm by taking seriously the problem of the bass drum in jazz and its historical and structural relation to the military march. However, he gets seriously wrong the different implications of marching rhythm for African-American (and therefore American) history, failing to understand its radical difference from the dangers of European fascism for its victims. -/- Transnational rhythmic forms in the black diaspora (including the United States) and the interracial experiences that these forms enable, at least as in-principle possibilities, continually contest the ‘the divisions between life and thought’ that have been taken for granted by majoritarian philosophy in the West. From this perspective, the segregation of intellect from feel (a technical term among musicians to indicate those normatively right aesthetic choices that nevertheless emerge in excess of predetermined rules is not tenable given the polyrhythmic background that must be presupposed in order for any piece of diasporic music, including and especially in the United States, to be intelligible. (shrink)