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STUDIO
Open

The room where the family plays

STUDIO

Compose with the family.

5 instruments · 1 clock · 1 mix

Timbre, Poles, Braids, Wavefunction, and Resonance - five browser instruments in one tab, locked to one master clock. Play them in concert and capture the result as a stereo mix and five stems.

Open Studio →

Free in browser · no account to make a sound

The mixstatic preview
Timb
Pole
Brai
Wave
Reso
Stra
Murm
Gasm
mix

your browser can't run the live transport — the faders still tint the room

Five instruments, one clock.

clock: 1 writer · N readers · seqlock

Studio loads the whole family - Timbre, Poles, Braids, Wavefunction, Resonance - into one browser tab and binds them to a single master clock. One Play, one tempo, everyone locked.

Each instrument keeps its own door and its own sound. Studio is the room they share: a master mixer to balance them, a master transport to start them together, and a master recorder to keep what you played.

Hit record and the room prints to a stereo file - plus a separate stem for every instrument, frame-aligned so they drop straight back into any DAW.

The signal path

Five players. One clock. No drift.

5 rings → Σ → master bus → mix + 5 stems

Each instrument runs in its own sandbox, yet they sum to one bus without a click of drift. The trick is the transport underneath - lock-free shared memory, not message passing.

Studio's signal flowFive instrument iframes on the left - Timbre, Poles, Braids, Wavefunction, and Resonance - each write audio into their own lock-free single-producer single-consumer ring. One mixer worklet in the centre drains all five rings, sums them sample-accurately, and feeds a master bus on the right that goes to the output and a multitrack recorder capturing a stereo mix plus five stems. A single master clock at the top is written by the mixer and read by every instrument, keeping the whole room locked in time.master clockSAB · seqlock · 1 writerwritesTimbreiframe · workletPolesiframe · workletBraidsiframe · workletWavefunctioniframe · workletResonanceiframe · workletStrandsiframe · workletMurmuriframe · workletGasmaniframe · worklet5 × lock-free SPSC ringmixerworklet · Σgain · pan · mute · solomaster busoutputAudioContext · your speakerszero added latencyrecorder6 rings · frame-alignedmix.wav+ 5 stems
  • lock-free SPSC ring
  • seqlock clock · 1 writer → 5 readers
  • sample-accurate sum
  • mix + 5 stems

Under the hood

The open-source spine under the room.

webgpu-audio-bridge · SharedArrayBuffer · lock-free

Summing five sandboxed instruments without a click of drift is a hard problem - and it's a problem with a name. webgpu-audio-bridge is the lock-free shared-memory transport that does it: open source, MIT-licensed, and built to move audio between threads without locks, copies, or glitches.

voicering occupancyflowplldrifts/tpushed
Timb0/16×1.00—+0.0 ppm0/00
Pole0/16×1.00—+0.0 ppm0/00
Brai0/16×1.00—+0.0 ppm0/00
Wave0/16×1.00—+0.0 ppm0/00
Reso0/16×1.00—+0.0 ppm0/00
Stra0/16×1.00—+0.0 ppm0/00
Murm0/16×1.00—+0.0 ppm0/00
Gasm0/16×1.00—+0.0 ppm0/00

press play in the mixer above to stream the rings →

Two transport tiers

Turbo over SharedArrayBuffer for sub-frame latency; Standard over MessageChannel where isolation isn't available.

Phase-locked clocks

A PLL corrects drift between each producer and the audio thread - the lock and drift-ppm you see ticking above are real.

Lean hot path

WASM-SIMD decode, adaptive backpressure, and zero-allocation ring reads keep the audio thread honest under load.

GPU-native

It can pull synthesis straight off a WebGPU buffer into audio - that's the webgpu in the name.

The family already rides it. Wavefunction streams its evolving quantum field to audio across the Bridge; Gasman synthesizes voices on the GPU and pushes them through it. Studio is moving its whole transport onto the same spine - so the room you just heard becomes the Bridge's flagship demo: every instrument on one open, observable, lock-free clock.

See it run in isolation →Read the Bridge's story →

How it works

Three moves. One take.

01

Open the room

iframe × 5 · same origin

Launch Studio and the five instruments load side by side in one tab - each its full self, each ready to play.

02

Set the clock

play · bpm → sampleCounter

One Play, one tempo. Every instrument slaves to the master sample counter, so a key struck in any of them lands exactly in time with the rest.

03

Mix & capture

REC → mix.wav + 5 × stem

Balance the room with faders, mutes, and solos. Hit record and the take prints to a stereo mix plus a frame-aligned stem for every instrument.

The cast

Five voices, and the room that holds them.

Each instrument is its own full thing with its own door. In Studio they become a band - and the room adds the two pieces a band needs.

Plus the room itself

Master clock

1 writer · N readers

One canonical sample counter, written every audio quantum and read by every instrument. Start them together; they never drift apart.

Multitrack recorder

mix + 5 stems · frame-aligned

One REC button captures the whole room - a stereo mix and a separate stem per instrument, sample-locked so they drop straight back into any DAW.

What you can make

Four ways into the room.

A generative ambient bed

ResonanceWavefunctionPoles

Slow the clock right down. Resonance holds a pad, Wavefunction shimmers over it, and Poles drops the occasional bell - a bed that never quite repeats.

Quantum-driven percussion

WavefunctionTimbre

Let Wavefunction's collapses trigger the hits and Timbre lay down the pattern around them. Rhythm with a little genuine randomness in its bones.

Braided counterpoint

BraidsPoles

Braids weaves two lines that trade places; Poles answers each crossing with a struck tone. Two voices that keep handing the melody back and forth.

A whole track

All five

Bring the whole family in, balance the room, and hit record. Out comes a stereo mix and five stems - finish it wherever you finish tracks.

share a session by link - permalinked compositions, coming soon

“A band is five instruments that agree on when now is.”

The Studio idea

Try it first, own it later

One room, three doors.

Free Web

$0

The whole room in your browser with all five instruments, the master clock and mixer, and recording to a stereo mix plus stems. No install, no account.

Open Studio →

Desktop

$19.99

The native Ephemera app: Studio plus the full DAW, offline, with file save and load, audio + MIDI export, VST3 hosting, and lifetime updates.

Get the desktop app →

Ephemera Premium

Included

Studio and every instrument ship with Ephemera Premium, the whole family in one subscription, always up to date.

See Ephemera →

One-time purchase · no subscriptions for the desktop app · free forever in the browser

FAQ

Questions, answered.

Studio loads the five Ephemera instruments — Timbre, Poles, Braids, Wavefunction, and Resonance — into one browser tab, bound to a single master clock. You play them together, balance them on a master mixer, and capture the result as a stereo mix plus a separate stem for every instrument.

Open the room.

load · clock · mix · capture

Five instruments, one tab, one master clock. Free in your browser, no account. Play the family together and keep the take.

Open Studio →