Create

Creating is for making your own shaders, saving your work as compositions, and capturing performances as sessions. Everything you can do when performing or composing is still here. Creating adds the authoring layer on top.

This is the right approach when you want to extend Fantasynth with your own content and build work you can come back to.

What you can do

Everything you can do when composing, plus:

Add custom shaders by pasting ShaderToy code, dragging in a .glsl file, or generating one with a chatbot (see Shaders)
Save compositions to keep your work as a complete project file
Import and export compositions and sessions as JSON
Record sessions to capture a performance and replay it beat for beat

Recording a session

A session captures every move you make during a performance: clip triggers, fader changes, parameter tweaks, and transport state, all timestamped to the beat grid. When session playback is enabled, pressing play replays the entire performance exactly as you recorded it.

Sessions can be exported as JSON and imported later, so you can keep your sets around and share them with other performers.

Who it is for

People who want to extend Fantasynth with their own content. If you write GLSL shaders, build compositions from scratch, or want to save and share your work, this is where it happens.