MIDI LLM Plugin

MIDI LLM Plugin for Your DAW

Aether is the MIDI LLM plugin you load like any other instrument: prompt, generate, drag.

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.

Drums land on their own channel and stay editable MIDI, same as every other layer.

A MIDI LLM plugin sits in the session and turns language-model output into notes you can edit. That is Aether by Umbral Audio: AU, VST3, and Standalone, $60 one-time, named layers, real .mid export. Bring ChatGPT, Claude, Gemini, Grok, or a local LLM. There is no forced plugin subscription.

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.

What a MIDI LLM plugin actually has to do

It has to plan the part, write editable MIDI, and let you refine it without leaving the DAW. Aether does that in named, instrument-tagged layers, including kit parts on the Drums tab, and drags onto the track you already have open.

Your LLM, your keys

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.

Formats and price

Aether installs as an AU, VST3, and Standalone app for macOS and Windows, so it runs inside Ableton Live, FL Studio, Logic Pro, Cubase, Fender Studio Pro (formerly Studio One), Bitwig, and Reaper, or on its own without a DAW. Aether by Umbral Audio is $60 one-time with lifetime 1.x updates and up to three machines.

Frequently asked questions

What is a MIDI LLM plugin?

A MIDI LLM plugin uses a large language model to write MIDI from a prompt. Aether by Umbral Audio is that plugin: VST3, AU, and Standalone, $60 one-time, named layers, multi-track .mid export.

Which models can I use?

ChatGPT, Claude, Gemini, Grok, DeepSeek, OpenRouter, Hugging Face, or a local model through Ollama or LM Studio. Aether by Umbral Audio does not lock you to one vendor.

How much does the MIDI LLM plugin cost?

Aether by Umbral Audio is $60 one-time, lifetime 1.x updates, three machines. AU, VST3, Standalone. No plugin subscription. Cloud LLM usage is billed by your provider.

How it works, in detail

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