Acid house

Acid house is a subgenre of house music developed around the mid-1980s by DJs from Chicago. The defining feature of a "squelching" bass sound was produced using the Roland TB-303 electronic synthesizer-sequencer. Acid house spread to the United Kingdom and continental Europe, where it was played by DJs in the acid house and later rave scenes. By the late 1980s, acid house had moved into the British mainstream, where it had some influence on pop and dance styles.

Acid house brought house music to a worldwide audience. The influence of acid house can be heard on later styles of dance music including trance, Goa trance, psychedelic trance, breakbeat, big beat, techno and trip hop.

Characteristics

Acid house's minimalist production aesthetic combined house music's ubiquitous programmed 4/4 beat with the electronic ‘squelch' sound produced by the Roland TB-303 electronic synthesizer-sequencer by constantly modulating its frequency and resonance controls to create 'movement' in otherwise simple bass patterns. Other elements, such as synthetic strings and stabs, were usually minimal. Sometimes tracks were instrumentals such as Phuture's "Acid Tracks", or contained full vocal performances such as Pierre's Pfantasy Club's "Dream Girl", while others were essentially instrumentals complemented by the odd spoken word 'drop-in', such as Phuture's "Slam".