Acid House

Originating in mid-1980s Chicago from producers like *DJ Pierre* and *Phuture* experimenting with the Roland TB-303, acid house is defined by its distinctive synthesized bassline. This sound, a liquid and resonant 'squelch' created by manipulating the 303's filter cutoff and resonance, is layered over a steady 4/4 beat from drum machines like the TR-808 or TR-909. The genre's minimalist, hypnotic structure fostered a utilitarian and psychedelic ethos on the dancefloor. It was exported to the UK, where it became the foundational soundtrack for the 'Second Summer of Love' and the nascent rave culture, shaping electronic music for decades.