Footwork is already old. Even a conservative estimate of the beginnings of this future-sound - in particular its singularly busy rhythmic sense - makes it nearly 15; geriatric for a fiercely regional club sub-genre. Still, its autumn years have seen a vigorous blossoming of the style, as well as the global spread of its rhythmic DNA. It's a strange phenomenon to observe, for music so embedded within its own worlds, both socio-geographical (inner-city Chicago) and sonic (a music made for dancing that sounds so comprehensively undanceable).
Footwork is said to be the sped-up cousin of Chicago juke, which is the sped-up cousin of ghetto house, which itself emerged around 1992 as a rude corrective to the slicker aspirations of mainstream Chicago house.