Acid house is a sub-genre of house music that emphasizes a repetitive, hypnotic and trance-like style, often with samples or spoken lines instead of lyrics. Acid house's core electronic squelch sounds were developed around the mid-1980s, particularly by DJs from Chicago who experimented with 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, copycat tracks and acid house remixes brought the style into the mainstream, where it had some influence on pop and dance styles.Nicknamed "the sound of acid", acid house's influence on dance music is tangible considering the sheer number of electronic music tracks referencing acid house through the use of its sounds, including trance, Goa Trance, psytrance, breakbeat, big beat, techno, trip-hop and house music
The earliest recorded examples of acid house are a matter of debate.
At least one historian considers the Phuture's "Acid Trax" to be the genre's earliest example; DJ Pierre says it may have been composed as early as 1985, but it was not released until 1987. Another points out Sleezy D's "I've Lost Control" (1986) was the first to be released on vinyl, and it's impossible to know which track was created first.