SAMPLED

Synthesis and sound design · updated 2026-08-16

ARPEGGIATOR

A sequencer that plays a held chord one note at a time in a pattern, locked to tempo. Rate, order and octave range are the usual controls.

Close-up of a Eurorack modular synthesizer: oscillator, filter and envelope modules wired together with patch cables, showing the signal path these synthesis terms describe.
Synthesis and sound design — Close-up of a Eurorack modular synthesizer: oscillator, filter and envelope modules wired together with patch cables, showing the signal path these synthesis terms describe.

Photo: Eurorack Modular Synthesizer Closeup (opens in a new tab) by Nir Yaniv (opens in a new tab), via Wikimedia Commons — CC BY-SA 4.0 (opens in a new tab)

Key takeaways

  • A sequencer that plays a held chord one note at a time in a pattern, locked to tempo.
  • Rate, order and octave range are the usual controls.
  • Modes, octave ranges, gate length and swing turn a static chord into a rhythmic part, and latch lets the pattern continue after the keys are released.
  • Hold a minor seventh chord with a sixteenth-note up-down arp and half the arrangement work is already done.
  • Watch out: leaving arps unquantised against a synced project.

Quick checklist

  • Can you define arpeggiator in one sentence without looking?
  • Can you point at arpeggiator in a real session, mix or contract?
  • Have you tried the practical move above at least once?
  • Would you catch the common mistake before it costs you a take?
  • Have you opened one of the primary sources below rather than a forum thread?

ARPEGGIATOR IN DEPTH

An arpeggiator takes held notes and plays them one at a time in a chosen order and rate. Modes, octave ranges, gate length and swing turn a static chord into a rhythmic part, and latch lets the pattern continue after the keys are released.

How it works in practice

Hold a minor seventh chord with a sixteenth-note up-down arp and half the arrangement work is already done.

The mistake people make

Leaving arps unquantised against a synced project. If the arp clock and the DAW clock are not locked, the pattern slowly drifts.

WHERE ARPEGGIATOR SITS

Arpeggiator belongs to synthesis and sound design in the Sampled music glossary. How synths make sound, in the order the signal actually travels.

TEST YOURSELF

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3 quick questions on arpeggiator. Answers are marked instantly — nothing is sent anywhere.

  1. 1. Which statement best describes arpeggiator?

  2. 2. What is the mistake people most often make with arpeggiator?

  3. 3. In practice, which of these applies to arpeggiator?

Ready for the full thing? Take the 25-question terminology test and get a certificate with your name and score.

SOURCES AND CITATIONS

Free, primary references for arpeggiator — standards bodies, manufacturers, government offices and university course material. Each one lists the line of this entry it backs up.

  • Ableton — Learning Music (opens in a new tab)

    Manufacturer learning resource · Ableton

    “A sequencer that plays a held chord one note at a time in a pattern, locked to tempo.”— the claim this source supports

    Why it counts: A free, hands-on explainer from a DAW maker — useful for hearing the concept rather than only reading it.

  • MIDI Association (opens in a new tab)

    Specification owner · The MIDI Association

    “Rate, order and octave range are the usual controls.”— the claim this source supports

    Why it counts: The body that publishes the MIDI specification, so this is the definition hardware and software are built against.

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