Roland TR-808

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.

The 808 was a commercial failure, as electronic music had yet to become mainstream and many producers wanted more realistic drum sounds. 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. He made extensive modifications to the Ace Tone drum machine, creating his own rhythms and wiring it through his organ's expression pedal to accent the percussion.

Lewis was approached by Ikutaro Kakehashi, the president and founder of Ace Tone, who wanted to know how he had achieved the sounds using the Ace Tone machine. In 1972, Kakehashi formed the Roland Corporation and hired Lewis to help design drum machines. By the late 1970s, microprocessors were appearing in instruments such as the Roland MC-8 Microcomposer, and Kakehashi realized they could be used to program drum machines. In 1978, Roland released the CompuRhythm CR-78, the first drum machine with which users could write, save and replay their own patterns.

The TR-808 is a piece of art. It's engineering art, it's so beautifully made. If you have an idea of what is going on in the inside, if you look at the circuit diagram, and you see how the unknown Roland engineer was making the best out of super limited technology, it's unbelievable. You look at the circuit diagram like you look at an orchestral score, you think, how on earth did they come up with this idea? It's brilliant, it's a masterpiece.

With its next machine, the TR-808, Roland aimed to develop a drum machine for the professional market, expecting that it would mainly be used to create demos. The team was led by the chief engineer Tadao Kikumoto. Makoto Muroi was a chief engineer, Hiro Nakamura was responsible for designing the analog voice circuits that generate the sounds, and Hisanori Matsuoka was responsible for developing the software and engineering hardware.