The Roland TR-808 Rhythm Composer, commonly known as the 808, is a drum machine manufactured by Roland Corporation between 1980 and 1983. It was one of the first drum machines to allow users to program rhythms instead of using preset patterns. Unlike its nearest competitor at the time, the more expensive Linn LM-1, the 808 generates sounds using analog synthesis rather than by playing samples.
Launched when electronic music had yet to become mainstream, the 808 was a commercial failure. After building approximately 12,000 units, Roland discontinued the 808 after its semiconductors became impossible to restock. It was succeeded by the TR-909 in 1983.
Over the course of the 1980s, the 808 attracted a cult following among underground musicians for its affordability on the used market, ease of use and idiosyncratic sounds, particularly its deep, booming bass drum. It became a cornerstone of the emerging electronic, dance, and hip hop genres, popularized by early hits such as "Planet Rock" by Afrika Bambaataa and the Soulsonic Force and "Sexual Healing" by Marvin Gaye.
The 808 was eventually used on more hit records than any other drum machine. Its popularity in hip hop has made it one of the most influential inventions in popular music, comparable to the Fender Stratocaster's impact on rock. Its sounds are included with music software and modern drum machines and it has inspired unlicensed recreations.
In the 1960s, drum machines were most often used to accompany home organs. They did not allow users to program rhythms, but instead offered preset patterns such as bossa nova. In 1969, the Hammond Organ Company hired the American musician and engineer Don Lewis to demonstrate its products, including an electronic organ with a built-in drum machine designed by the Japanese company Ace Tone. Lewis was known for performances using electronic instruments he had modified, decades before the popularization of instrument hacking via circuit bending.