Techno is a form of electronic dance music that emerged in Detroit, Michigan, in the United States during the mid-to-late 1980s. The first recorded use of the word techno in reference to a specific genre of music was in 1988. Many styles of techno now exist, but Detroit techno is seen as the foundation upon which a number of subgenres have been built.
Stylistically, techno is generally repetitive instrumental music, often produced for use in a continuous DJ set. The central rhythmic component is most often in common time (4/4), where time is marked with a bass drum on each quarter note pulse, a backbeat played by snare or clap on the second and fourth pulses of the bar, and an open hi-hat sounding every second eighth note. The tempo tends to vary between approximately 120 to 150 beats per minute (bpm), depending on the style of techno.
The creative use of music production technology, such as drum machines, synthesizers, and digital audio workstations, is viewed as an important aspect of the music’s aesthetic. Many producers use retro electronic musical devices to create what they consider to be an authentic techno sound. Drum machines from the 1980s such as Roland’s TR-808 and TR-909 are highly prized, and software emulations of such retro technology are popular among techno producers.