Sound Looper

Any sound on any pad, looped and quantized in time. Build a full song live.

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BPM
Tap Start once to unlock audio.
Looking for the ATOM SQ…
In native mode the unit only defines button A, so B–H are learned from your unit once and remembered. Background mode keeps the music playing with the screen off.

Hardware controls (every button on the unit, live)

Pads 1–32Play / launch the loop on that pad. Lit: dim = empty, white = one-shot, purple = has a rhythm, cyan = loop ready, green = looping now, amber = selected.
+ and −The two extra sound slots (33 and 34), exactly like the other pads.
PlayStart / stop the transport.
StopStop the transport; press again to stop every running loop.
RecordStart / stop recording your song, then it downloads as a WAV.
MetronomeClick on / off.
A B C DLaunch scene A/B/C/D on the next bar (your song sections).
E F G HE stop all loops · F tap tempo · G metronome · H backing track.
Song / Inst / Editor / UserSwitch what the unit's screen shows: scenes / selected pad / its rhythm / AI. These also hand the screen back to the unit, so the page re-claims it automatically.
Touch stripMaster volume. Hold Shift for the selected pad's volume.
Knobs 1–61 BPM · 2 master · 3 pad volume · 4 pad pitch · 5 backing track · 6 loop length.
Nav / page keysMove the selected pad. The screen encoder does the same.
Screen keys 1–6Labelled live on the unit: scenes A–D, stop all, record.

Pads (all 34 hardware keys: 32 pads + the "+" and "−" pads, every one programmable)

Click a pad to select and edit it below. Second click (or hardware pad / keyboard) plays it. Hardware: pads send notes 36–67; the "+"/"−" slots have a Learn button for whatever your unit sends. Keyboard: bottom row of pads = keys 1–9 0 q w e r t y, top row = a s d f g h j k l z x c v b n m.

Selected pad: none

Mode Tap length Loop length Quantize
Volume Pitch 0 st Choke

Rhythm (one bar of 16ths, plays while transport runs)

Leave empty to play the pad only by hand.

Sound library

Every ATOM SQ pack sound (yours + built-in), assigned to the selected pad with one click.

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Background instrumental

Load a full track (mp3/wav) to remix over. Synced mode time-stretches it to your BPM.

Sync Volume

Scenes (song sections you record and replay)

Press Rec on a scene: recording starts on the next bar, you play the pads, and at the end of the bar count it loops back exactly as you played it. Capture loops also stores which loop pads were running, so Play brings back the whole section. Everything is quantised to 16ths and locked to the transport, so scenes always line up with each other.

AI co-producer (live edits while the music plays, on your free AI keys)

Audio engine: Tone.js (MIT), self-hosted. Loops are tempo-synced with granular time-stretching (pitch preserved), the same technique real looper software uses. All audio runs in your browser; recordings and uploads stay on this device.