A drum machine is an electronic musical instrument that creates percussion sounds, drum beats, and patterns. Drum machines may imitate drum kits or other percussion instruments, or produce unique sounds, such as synthesized electronic tones. A drum machine often has pre-programmed beats and patterns for popular genres and styles, such as pop music, rock music, and dance music. Most modern drum machines made in the 2010s and 2020s also allow users to program their own rhythms and beats. Drum machines may create sounds using analog synthesis or play prerecorded samples.
While a distinction is generally made between drum machines (which can play back pre-programmed or user-programmed beats or patterns) and electronic drums (which have pads that can be struck and played like an acoustic drum kit), there are some drum machines that have buttons or pads that allow the performer to play drum sounds "live", either on top of a programmed drum beat or as a standalone performance. Drum machines have a range of capabilities, which go from playing a short beat pattern in a loop, to being able to program or record complex song arrangements with changes of meter and style.
Drum machines have had a lasting impact on popular music in the 20th century. The Roland TR-808, introduced in 1980, significantly influenced the development of dance music, especially electronic dance music, and hip hop. Its successor, the TR-909, introduced in 1983, heavily influenced techno and house music. The first drum machine to use samples of real drum kits, the Linn LM-1, was introduced in 1980 and was adopted by rock and pop artists including Prince and Michael Jackson. In the late 1990s, software emulations began to overtake the popularity of physical drum machines housed in a separate plastic or metal chassis.
History
Rhythmicon (1930–1932) In 1930–32, the innovative and hard-to-use Rhythmicon was developed by Léon Theremin at the request of Henry Cowell, who wanted an instrument that could play compositions with multiple rhythmic patterns, based on the overtone series, that were far too hard to perform on existing keyboard instruments. The invention could produce sixteen different rhythms, each associated with a particular pitch, either individually or in any combination, including en masse, if desired. Received with considerable interest when it was publicly introduced in 1932, the Rhythmicon was soon set aside by Cowell.
Chamberlin Rhythmate (1957) In 1957, Harry Chamberlin, an engineer from Iowa, created the Chamberlin Rhythmate, which allowed users to select between 14 tape loops of drum kits and percussion instruments performing various beats. Like the Chamberlin keyboard, the Rhythmate was intended for family singalongs. Around 100 units were sold.
First commercial product – Wurlitzer Side Man (1959)
In 1959, Wurlitzer released the Side Man, which generates sounds mechanically by a rotating disc, similar to a music box. A slider controls the tempo (between 34 and 150 beats per minute). Sounds can also be triggered individually through buttons on a control panel. The Side Man was a success and drew criticism from the American Federation of Musicians, which ruled in 1961 that its local jurisdictions could not prohibit Side Man use, though it could not be used for dancing. Wurlitzer ceased production of the Sideman in 1969.
Raymond Scott (1960–1963) In 1960, Raymond Scott constructed the Rhythm Synthesizer and, in 1963, a drum machine called Bandito the Bongo Artist. Scott's machines were used for recording his album Soothing Sounds for Baby series (1964).
First fully transistorized drum machines – Seeburg/Gulbransen (1964)
During the 1960s, the implementation of rhythm machines were evolved into fully solid-state (transistorized) from early electro-mechanical with vacuum tubes, and also size was reduced to desktop size from earlier floor type. In the early 1960s, a home organ manufacturer, Gulbransen (later acquired by Fender) cooperated with an automatic musical equipment manufacturer Seeburg Corporation, and released early compact rhythm machines Rhythm Prince (PRP), although, at that time, these sizes were still as large as small guitar amp head, due to the use of bulky electro-mechanical pattern generators. Then in 1964, Seeburg invented a compact electronic rhythm pattern generator using "diode matrix" ( in 1967), and fully transistorized electronic rhythm machine with pre-programmed patterns, Select-A-Rhythm (SAR1), was released. As a result of its robustness and enough compact size, these rhythm machines were gradually installed on the electronic organ as an accompaniment of organists and finally spread widely.