Editing Music sequencer (section)

=== Step sequencers ===
{{multiple image | align=right | direction=horizontal
 | <!-- header    = Step sequencers -->
 <!-- Image 1 -->
 | image1    = Wurlitzer Sideman (1959) disc sequencer.jpg| width1    = 130
 | caption1  = Electro-mechanical disc sequencer on [[Drum machine#Early drum machines|early drum machine]] <!-- , [[Wurlitzer]] Sideman --> (1959)
 <!-- Image 2 -->
 | image2    = Eko ComputeRhythm.png| width2    = 131
 | caption2  = [[Eko guitars|Eko]] ComputeRhythm (1972),<ref name="jarrography-Eko">
{{cite web
 |title       = EKO Computerhythm (1972)
 |url         = https://www.jarrography.free.fr/details_equipement_audio.php?id_equip=117
 |work        = Jarrography – The ultimate Jean Michel Jarre discography
 |url-status  = live
 |archive-url = https://web.archive.org/web/20120503190624/http://www.jarrography.free.fr/details_equipement_audio.php?id_equip=117
 |archive-date = 2012-05-03
}}
</ref><ref name="synthmaster-Eko">
{{cite web
 |title        = EKO Computerhythm
 |url          = https://www.synthmaster.de/ekodrum.htm
 |work         = SynthMaster.de
 |url-status   = live
 |archive-url  = https://web.archive.org/web/20160304083316/http://www.synthmaster.de/ekodrum.htm
 |archive-date = 2016-03-04
}}
</ref> one of the earliest programmable drum machines
 <!-- Image 3 -->
 | image3    = Firstman SQ-01.png| width3    = 116
 | caption3  = [[Multivox#Digital sequencers|Firstman SQ-01]] (1980),<ref name="synrise-SQ01">
{{cite web
 | title     = Multivox International
 | url       = https://www.synrise.de/docs/types/f/firstman.htm
 | language  = de| work      = SYNRISE
 | archive-url= https://web.archive.org/web/20030420170643/http://www.synrise.de/docs/types/f/firstman.htm
 | archive-date=2003-04-20
}}
</ref> one of the earliest step [[Bass synth|bass]] machines
}}
{{See also|Drum machine|Bass synth|Groovebox}}
{{Confusing section|date=October 2011}}

The ''step sequencer''s played rigid patterns of notes using a grid of (usually) 16 buttons, or steps, each step being 1/16 of a [[bar (music)|measure]]. These patterns of notes were then chained together to form longer compositions.  Sequencers of this kind are still in use, mostly built into [[drum machine]]s and [[groovebox]]es. They are monophonic by nature, although some are [[multi-timbral]], meaning that they can control several different sounds but only play one note on each of those sounds.{{clarify|date=October 2011}}