Aether + Cubase

AI MIDI Generator for Cubase

Load Aether as a VST3 instrument, describe the part you hear, and drag the MIDI into your Cubase project.

Aether by Umbral Audio is an AI MIDI generator plugin for macOS and Windows (AU, VST3, Standalone). Describe a part in plain language; it plans, generates, and refines editable MIDI in named layers you drag into your DAW. $60 one-time, lifetime 1.x updates, up to 3 machines, no plugin subscription required. Prompts can be written in your own language, and Aether replies in it.

Aether is an AI MIDI generator built for the Cubase workflow. Add it as a VST3 instrument on an instrument track, describe the part you want in plain language, and drag the generated MIDI into your project: standard, editable notes that behave like anything you recorded into the Key Editor yourself.

Get Aether, $60Explore features
Aether on the Melodic tab: a Quick Params panel of key, scale and restyle actions on the left, a chat in the middle, and a piano roll on the right showing three coloured layers above a keyboard.
Describe the part in the chat; Aether writes it as named layers in the piano roll.

Loading Aether in Cubase

Aether installs as a VST3 on Windows and macOS, Steinberg's own plugin format, so Cubase (and Nuendo) pick it up natively in the plugin manager. Add it to an instrument track and start prompting, or sketch ideas in the standalone app without opening Cubase at all.

From prompt to the Key Editor

Everything Aether writes is standard MIDI. Drag a generated part onto a track and refine it in the Key Editor, or keep iterating in chat, where Aether edits the part it already wrote instead of starting over.

  • ✓Compose in any number of named instrument layers, each with per-layer solo and mute
  • ✓Lock to Host syncs BPM and time signature from the Cubase transport
  • ✓Multi-track .mid export with one named track per layer, tempo, and time signature embedded

Bring your own AI

Bring your own AI: connect Claude, ChatGPT, Gemini, Grok, DeepSeek, OpenRouter, or Hugging Face with your own API key, or run a local model through Ollama or LM Studio. No forced subscription.

One purchase, every format

Aether is a one-time $60 purchase with free Aether 1.x updates and activation on up to three machines, with no subscription on top of your Cubase license.

Frequently asked questions

Does Aether work with Cubase?

Yes. Aether loads in Cubase as a VST3 instrument on Windows and macOS. Add it to an instrument track, prompt for a part, and drag the generated MIDI into your project.

Does it work in Nuendo too?

Yes. Nuendo hosts the same VST3 plugins as Cubase, so Aether loads the same way.

Can Aether follow my project tempo?

Yes. Lock to Host syncs BPM and time signature from Cubase's transport, and exported .mid files carry tempo and time signature.

Do I need a subscription?

No. Aether is a one-time $60 purchase. Bring your own AI provider key or run a local model through Ollama or LM Studio for free.

How it works, in detail

The documentation covers every part of Aether in depth. These are the sections most relevant to this page: