Techno is a form of electronic dance music that became prominent in Detroit, Michigan during the mid-1980s with influences from Chicago House, electro, New Wave, Funk and futuristic fiction themes that were prevalent and relative to modern culture during the end of the Cold War in industrial America at that time. Following the initial success of Detroit Techno as a musical culture — at the very least on a regional level — an expanded and related subset of genres in the 1990s emerged globally.

The term "techno", which derives from "technology", is often (incorrectly) used to refer to all forms of electronic music. Music journalists and fans of the genre, however, are generally more selective in their use of the term, being careful not to conflate it with related but distinct genres (i.e. house, trance, hardcore).

Techno was primarily developed by "The Belleville Three", a cadre of men who were attending college, at the time, near Detroit, Michigan. The budding musicians – former high school friends and mix tape traders Juan Atkins, Derrick May, and Kevin Saunderson – found inspiration in Midnight Funk Association, an eclectic, 5-hour, late-night radio program hosted on various Detroit radio stations including WCHB, WGPR, and WJLB-FM from 1977 through the mid-1980s by DJ Charles "The Electrifying Mojo" Johnson. Mojo's show featured heavy doses of electronic sounds from the likes of Giorgio Moroder, Kraftwerk, and Tangerine Dream, among others.

Though initially conceived as party music that was played on daily mixed radio programs and played at parties given by cliquish, Detroit high school clubs, it has grown to be a global phenomenon. High school clubs such as Snobbs, Hardwear, Brats, Comrades, Weekends, Rumours, and Shari Vari created the incubator in which Techno was grown. These young promoters developed and nurtured the local dance music scene by both catering to the tastes of the local audience of young people and by marketing parties with innovative DJs and eclectic new music. As these local clubs grew in popularity, groups of DJs began to band together and market their mixing skills and sound systems to the clubs under names like Direct Drive and Audio Mix in order to cater to the growing audiences of listeners. Locations like local church activity centers, vacant warehouses, offices and YMCA auditoriums were the early locations where the underage crowds gathered, and where the musical form was nurtured and defined.

Source : http://en.wikipedia.org