Definition
A sequencer is the part of a groovebox or DAW that records, stores, and plays back a pattern of notes in time, driving your sounds without you replaying them.
Example
Program a kick, snare, and hi-hat pattern into a sequencer, press play, and it loops the part endlessly and perfectly in time. You are then free to tweak sounds, add parts, or perform over the top while the sequencer holds the groove steady.
Why it matters
The sequencer is the heart of beat-making hardware. It turns a fleeting performance into a repeatable, editable pattern, and it is what lets one person build a full arrangement layer by layer. Every drum machine, groovebox, and DAW is organised around its sequencer.
How to play or configure
Set the tempo and pattern length, then choose between real-time recording (playing the pads as the pattern loops) and step entry. Use the metronome while recording, then quantize or edit afterwards. Chain several patterns together to form a song, and save often so a pattern you like is never lost to an accidental overwrite.
Related terms
Further reading
MPC vs Maschine vs Push compares the three sequencers side by side.