Quick Start

Open the app

Fantasynth runs entirely in the browser. No installation, no plugins. Just open the URL and you’re ready to go. Works best in Chrome or Edge with WebGL 2.0 support.

Load a composition

A composition is a collection of visual clips organized into layers and tracks. The default composition loads automatically. To load a different one, open the settings panel.

Play music

Upload an audio file or connect to a live audio source. Fantasynth analyzes the audio in real-time to extract beat and frequency data that drives the visuals.

Trigger clips

Use the touchscreen or a MIDI controller to trigger clips. Each layer can have one active clip at a time. Triggering a new clip in the same layer crossfades from the previous one.

Adjust parameters

Every clip exposes parameters you can tweak live: colors, speeds, intensities, blend modes. Map them to MIDI knobs for hands-on control during a performance.