Electro

In 1982 Afrika Bambaataa — the Bronx DJ famous for playing anything funky, including German imports — went into the studio with producer Arthur Baker and a Roland TR-808 drum machine and built “Planet Rock” out of two Kraftwerk records: the melody of “Trans-Europe Express” over the rhythm of “Numbers.” Black Bronx party culture and Düsseldorf machine-music turned out to be siblings under the skin — Kraftwerk themselves had absorbed James Brown — and the record electrified dance floors worldwide (Chang 2005).

Electro’s signature is the 808: booming sub-bass kicks, crisp machine claps, vocoded voices, tempos built for breakdancers. For a few years it was hip-hop’s dominant sound (“Planet Rock,” “Looking for the Perfect Beat,” Hashim’s “Al-Naafiysh”) before sampling pulled rap back toward funk breaks.

Its descendants ran outward like current. In Miami, the 808’s bass boom became Miami bass — faster, ruder, built for car trunks. In Detroit, electro plus European synth music became techno. And when Miami bass records reached Rio de Janeiro’s sound-system parties in the late 1980s, they became the rhythmic chassis of funk carioca — the exact transatlantic bridge this site was designed to draw, waiting as a planned edge from this node to the future Brazilian tree.