#acidhouse is a subgenre of house music developed around the mid-1980s by DJs from Chicago. The style was defined primarily by the deep basslines and "squelching" sounds of the Roland TB-303 electronic synthesizer-sequencer.
Chicago's house music scene suffered a crackdown on parties and events by the police. Sales of house records dwindled and, by 1988, the genre was selling less than a tenth as many records as at the height of the style's popularity. However, house and especially acid house was beginning to experience a surge in popularity in Britain.
This period began what some call the Second Summer of Love, a movement credited with a reduction in football hooliganism: instead of fights, football fans were listening to music, taking ecstasy, and joining the other club attendees in a peaceful movement that has been compared to the Summer of Love in San Francisco in 1967.