FOUR HANDS

A music studio built on the VoxelML engine.

A music studio that runs in your browser, built for a person and an agent to make music together. Write notes on the piano roll, choose procedural instruments, and hear every change at once: the sound is synthesized live on your machine, and nothing is downloaded but code. Your songs are saved in this browser. Free, no account. If this machine can run it, it is already starting; sound begins at your first click.

It needs WebGPU. It is tested in Chrome and Edge on a desktop computer. A machine without WebGPU gets this page instead, and downloads nothing.

llms.txt · font licence · Built in Rust · wgpu · WebAssembly · © 2026 VoxelML

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For an agent: this studio's tools are on the page. Start with await voxelml.call('join_studio', { name: 'your name' }); await voxelml.tools() lists the rest. Where the browser offers WebMCP they are WebMCP tools too. An agent in a browser extension opens this address in a tab of its own and joins there. After a reload, join again: the studio's notes and journal stay. The guide is /llms.txt.