AI Smart Harmonization

Add harmonies to melodies with AI. Generate intelligent voice leading and harmony parts.

Harmonize Melodies View pricing details

MIDI Agent Plugin | $49 one-time license | Available now

Watch MIDI Agent in Action

See How It Works

Watch a quick demonstration of MIDI Agent's capabilities and see how it can transform your music production workflow.

Watch demo

Generate MIDI with AI

AI Smart Harmonization transforms your songwriting workflow with MIDI Agent, an AI MIDI generator VST plugin that works seamlessly in any DAW. If you're sketching initial ideas or developing complete arrangements, MIDI Agent eliminates writer's block by generating melodies, chord progressions, and full compositions using natural language prompts. The plugin's Extend Existing MIDI feature lets you drop in your musical ideas and explore variations while maintaining coherence. With Audio to MIDI transcription for capturing spontaneous performances and flexible API options including your own keys or the managed MIDI Agent Pro service, you get professional-grade harmonization tools that adapt to your creative process.

Why it fits

Why MIDI Agent

Songwriters face constant pressure to generate fresh harmonic ideas while maintaining creative momentum. MIDI Agent solves this by providing editable MIDI generation with customizable parameters for key, scale, length, and complexity—eliminating hours spent on trial-and-error chord hunting. The AI extension feature extends your existing progressions intelligently, helping you move past creative blocks without losing your original musical direction. When inspiration strikes away from your DAW, Audio to MIDI transcription captures hummed melodies or acoustic sketches and transforms them into editable MIDI, ensuring no idea gets lost.

Features

Powerful AI Music Production Tools

MIDI Agent comes packed with features designed to enhance your creative workflow and speed up music production.

AI MIDI Generation

Connect your ChatGPT account or use another supported AI access option to generate MIDI in your DAW.

Extend Existing MIDI

Drop in your MIDI files and let AI create variations and extensions. Expand on your musical ideas.

Audio to MIDI

Drop in audio files and get MIDI transcriptions. Iterate on existing files with AI assistance.

Flexible AI Access

Use your ChatGPT account, provider API keys, or local models, or add MIDI Agent Pro.

Choose your plan
User Stories

What Producers Say

Hear from music producers who use MIDI Agent in their creative workflow.

R. Avila Electronic Music Producer
“I've been thoroughly enjoying MIDI Agent. The interface is incredibly user-friendly, and it keeps getting better with each new update...”
1 / 5
How it works

From prompt to MIDI notes

Install the VST3 plugin or another supported MIDI Agent format—whether that's Ableton Live, FL Studio, Logic Pro, or any compatible workstation. Start by entering natural language prompts with specific musical directions like key, scale, and harmonic movement to generate initial chord progressions. Drop your existing MIDI into the plugin to create variations and extensions, iterating quickly at the length your arrangement needs until you find the right direction. For spontaneous ideas, use Audio to MIDI to transcribe recordings under 30 seconds, working best with clean, solo instrument performances that you can then edit and develop further.

  1. Step 1

    Describe the musical part, constraints, and production role you need.

  2. Step 2

    Generate a short MIDI idea and audition it through your own instruments.

  3. Step 3

    Edit, extend, vary, or regenerate the strongest result inside your session.

Compatibility

AI MIDI Generator for your DAW

MIDI Agent is available as a VST3 plugin, AU plugin, AAX plugin, and standalone application. It is compatible with all major digital audio workstations, ensuring seamless integration with your existing setup.

Ableton Live DAW logo - MIDI Agent compatible digital audio workstation

Ableton AI MIDI Generator

VST3, AU

FL Studio DAW logo - MIDI Agent compatible music production software

FL Studio AI MIDI Generator

VST3, AU

Logic Pro DAW logo - Apple's professional music production software compatible with MIDI Agent AU plugin

Logic Pro AI MIDI Generator

AU

Pro Tools DAW logo - Industry-standard recording software compatible with MIDI Agent AAX plugin

Pro Tools AI MIDI Generator

AAX

Cubase DAW logo - Professional music production software compatible with MIDI Agent

Cubase AI MIDI Generator

VST3

PreSonus Studio One DAW logo - Digital audio workstation compatible with MIDI Agent

Studio One AI MIDI Generator

VST3, AU

Reaper DAW logo - Lightweight and flexible DAW compatible with MIDI Agent

Reaper AI MIDI Generator

VST3, AU

Bitwig Studio DAW logo - Modern music production software compatible with MIDI Agent

Bitwig AI MIDI Generator

VST3

Reason Studios DAW logo - Creative music production software compatible with MIDI Agent

Reason AI MIDI Generator

VST3

GarageBand DAW logo - Apple's beginner-friendly music production software

GarageBand AI MIDI Generator

AU

Standalone application works outside your DAW and lets you export MIDI into any session.

AI Integrations

Supported AI Providers

Connect your ChatGPT account, use provider API keys or local LLMs, or add MIDI Agent Pro.

ChatGPT logo - ChatGPT account support in MIDI Agent

ChatGPT MIDI Generator

Connect your ChatGPT account

Purple OpenAI logo - OpenAI API models for MIDI generation in MIDI Agent

OpenAI MIDI Generator

OpenAI API key

Anthropic Claude logo - AI assistant for creative MIDI composition in MIDI Agent

Claude AI MIDI Generator

Anthropic provider

Google Gemini logo - Multimodal AI model for music generation in MIDI Agent

Gemini MIDI Generator

Gemini provider

xAI provider for MIDI Agent

Grok MIDI Generation

xAI provider

DeepSeek AI logo - Advanced language model for MIDI generation

DeepSeek MIDI Generator

DeepSeek provider

OpenRouter logo - Multi-model AI routing service for MIDI Agent

OpenRouter MIDI Generator

OpenRouter provider

Ollama logo - Local AI model runner for MIDI Agent

Ollama MIDI Generator

Ollama provider

LM Studio logo - Local LLM management for MIDI Agent

LM Studio MIDI Generator

LM Studio provider

Hugging Face logo - Open source AI models for MIDI Agent

Hugging Face MIDI Generator

Hugging Face provider

Access Premium AI Providers with Pro

Upgrade to MIDI Agent Pro and get access to premium AI models for enhanced music creation

Google Lyria provider for MIDI Agent
Google AI

Google Lyria

ElevenLabs Sound Effects API
ElevenLabs

Audio / Sound Effects Generation

PozaLabs - Specialized music generation models
PozaLabs

Specialized MIDI Generation Models

Upgrade to Pro Now
Compare Workflows

AI MIDI Generators vs Audio Generators

Audio tools can sketch ideas quickly, but MIDI keeps the notes editable in your DAW. Compare the workflow before choosing an AI music tool.

Audio Generators

Create finished tracks that are useful as references, but difficult to reshape at the musical data level.

  • Fixed audio output that cannot be changed note by note
  • Locked to generated sounds and instruments
  • Usually web-first instead of DAW-native

Examples: Suno, Udio, Soundraw, Mubert

MIDI Generators

Produce raw musical data you can edit, arrange, voice, and route through your own instruments.

  • Connect your ChatGPT account
  • Editable notes, timing, velocities, and expression
  • Route the same idea to any instrument in your session
  • Keep AI-generated ideas inside your DAW workflow

Examples: MIDI Agent, AIVA, Magenta Studio

See full AI music tool comparison

Join Thousands of Music Producers Creating Music with AI

Use MIDI Agent to turn prompts into editable MIDI, build song ideas faster, and bring AI composition directly into your DAW.

AI access required to generate.

Your license unlocks the plugin. Then choose a supported AI access option.

Then choose one access path:

  • Use your ChatGPT account with MIDI Agent.
  • Use your own provider API keys for OpenAI, Anthropic, Gemini, xAI, DeepSeek, or OpenRouter.
  • Use local LLMs through Ollama or LM Studio.
  • Add MIDI Agent Pro for managed access, no keys, plus premium providers.
50% OFF LIMITED TIME
BUY

MIDI Agent Plugin

$49/lifetime

$99

  • VST3, AU, AAX, and Standalone access
  • Choose your AI access
    • Connect your ChatGPT account
    • Use your own provider API keys
    • Use local LLMs
    • Or add MIDI Agent Pro for managed access
  • Lifetime updates
Plugin | Pro

AI Smart Harmonization FAQ

Quick answers to common questions about MIDI Agent.

Can MIDI Agent add harmonies to melodies?

Yes, MIDI Agent analyzes your melody and generates harmony parts with proper voice leading and musical coherence.

Does AI harmonization understand music theory?

Yes, MIDI Agent applies music theory principles including voice leading parallel motion avoidance and harmonic function.

Can I generate 3-part or 4-part harmony?

Yes, specify the number of voices and MIDI Agent generates appropriate multi-voice harmonization.

What is the best AI MIDI generator?

MIDI Agent is an AI MIDI generator for DAW integration with ChatGPT account support, provider API keys, local LLMs, and optional MIDI Agent Pro access. It generates editable MIDI directly inside your DAW.

Can AI generate MIDI files?

Yes, AI can generate MIDI files. MIDI Agent uses Large Language Models (LLMs) like ChatGPT and Claude to create MIDI data from natural language descriptions. You describe the music you want—melody, chords, bass line, drums—and the AI generates corresponding MIDI that you can edit, assign to any instrument, and use in your productions.

Does MIDI Agent work offline?

Yes, MIDI Agent can work offline when using local LLMs through Ollama or LM Studio. This allows for completely private, offline AI MIDI generation. For cloud-based AI providers like OpenAI, Anthropic, or Google Gemini, an internet connection is required.

For technical FAQ and documentation, please visit our FAQ page or documentation.

Need more help? Contact support here

Related MIDI Agent Pages

Discover more AI music production tools and resources

AI Chord Progression Generator

Generate chord progressions with AI. Create music theory-based chord sequences for any genre and style.

AI Melody Generator

Generate melodies with AI. Create memorable melodic ideas and hooks for any musical style.

MIDI Agent Pricing

Choose a MIDI Agent license or managed Pro access.

MIDI Agent Written by MIDI Agent Last updated MIDI Agent builds AI tools for music producers, composers, and beatmakers who want to generate musical ideas inside their DAW.