Rhythms operate on us like little machines; certain notes in the right order have the power to excite the cerebellum and inspire movement. Most of us experience rhythm on this instinctual level, but some producers are cerebral tinkerers, breaking apart the machines to see how they work. J Dilla was a font of curiosity who could hear beats in everything, even obscure Raymond Scott experiments. Four Tet is one of dance music’s great deconstructionists, flipping the rhythm of “As Serious As Your Life” ten different ways, while Jlin reshapes the joyful patterns of footwork into something sinister.