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Music sequencer

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A music sequencer is a tool used to record and play music.

Sequential Circuits Six-Trak front
Sequential Circuits Six-Trak front

It works by handling note information in different ways. Some tools use MIDI, which is a way for devices to talk to each other. Others use CV/Gate or Open Sound Control to send signals. Modern musicians often use software sequencers inside a digital audio workstation, or DAW.

Cubase6 main audio tracks
Cubase6 main audio tracks

These programs can even control virtual instruments made of code. This lets people make music without huge, expensive machines.

There are several ways a sequencer can work. An analog sequencer uses electronics like knobs and sliders.

Korg SQ-10
Korg SQ-10

A user can change notes at any time during a live show. A step sequencer is different because it uses a grid of equal steps.

Fairlight II Page R
Fairlight II Page R

On a drum machine, you might pick a timing from a row of buttons. On a bass machine, you might pick a note from a keypad first. A realtime sequencer works more like a standard audio recorder.

Sequential Circuits Six-Trak front
Sequential Circuits Six-Trak front

It records notes exactly as they are played in the moment.

Sequencers have a very long and interesting history.

Early versions were mechanical instruments like music boxes or player pianos. These used rolls with punched holes to tell the machine what to play. As far back as the 9th century, the Banū Mūsā brothers in Persia made a flute machine.

It used water power to play repetitive music. Later, in 1206, an engineer named Al-Jazari made a programmable drum machine. It used pegs to bump into levers to create different rhythms.

Technology changed how we make music in the 20th century.

Roland TR-808 drum machine
Roland TR-808 drum machine

In the 1940s, Raymond Scott built an electro-mechanical sequencer called the Wall of Sound. It used many parts like solenoids and switches to make rhythms. In 1951, a computer in Australia named CSIRAC played the first computer music.

CSIRAC-Pano,-Melb.-Museum,-12.8.2008
CSIRAC-Pano,-Melb.-Museum,-12.8.2008

Later, in 1957, Max Mathews wrote MUSIC at Bell Labs. This was a famous program for making sounds on a computer. These early steps led to the digital tools we use today.

Today, most sequencing happens on computers through software.

Cubase6 main audio tracks
Cubase6 main audio tracks

You can see this in how a DAW looks on a screen. Musicians use tools like a piano roll editor to move notes around.

Cubase6 Key Editor piano roll with Note Expression
Cubase6 Key Editor piano roll with Note Expression

They might also use a loop sequencer to repeat parts of a song. Even though software is very popular, hardware machines still exist.

Akai MPC60
Akai MPC60

Drum machines and workstation keyboards often have their own built-in sequencers. This helps musicians keep their tools organized and ready to play.

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🖼️ Images & Media (27)
File:Korg SQ-10.JPG
Korg SQ-10.JPG
File:Sequential Circuits Six-Trak front.png
Sequential Circuits Six-Trak front.png
File:Cheesetracker-shot.png
Cheesetracker-shot.png
File:Cubase6 Score Editor.png
Cubase6 Score Editor.png
File:Cubase6 Key Editor piano roll with Note Expression.jpg
Cubase6 Key Editor piano roll with Note...
File:Cubase6 main audio tracks.jpg
Cubase6 main audio tracks.jpg
File:Cubase 6 feature - software studio environment including software instruments and software effects.svg
Cubase 6 feature - software studio...
File:Cubase6 LoopMash 2 loop remixer (brighten).jpg
Cubase6 LoopMash 2 loop remixer (brighten).jpg
File:Cubase6 Sample Editor beat slicing.jpg
Cubase6 Sample Editor beat slicing.jpg
File:Cubase6 VariAudio vocal pitch editing.jpg
Cubase6 VariAudio vocal pitch editing.jpg
File:Polyphonic note separation & manipulation.jpg
Polyphonic note separation & manipulation.jpg
File:Ardour-screenshot-big (tracks, mixer, x-fade - brighten).jpg
Ardour-screenshot-big (tracks, mixer,...

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