The AI-Powered MIDI Editor
Compose • Edit • Transform • Play - with an intelligent copilot that understands music.
✨ Features
Everything you need for MIDI editing - plus an AI that actually helps.
MidiPilot AI Copilot
15 AI tools, live Agent streaming, provider model refresh, favourites, and natural language MIDI editing. Compose, harmonize, fix, and refine - just ask.
Tabs & Editor Groups
Keep several MIDI files open as tabs and edit two side by side in independent editor groups. Drag tabs between groups, compare with synced scroll, zoom and cursor, and each document keeps its own selection and view.
Real-time Collaboration
Co-edit MIDI files live with up to 8 peers over LAN or WAN, peer-to-peer over WebRTC + DTLS. Async PR workflow with smart-paste tokens, optional Discord webhook for sharing, and a 6-second Connection Test diagnostic.
Score & Tab Import
Open Guitar Pro (GP1-GP8), MusicXML (.musicxml / .xml / .mxl), and MuseScore (.mscz / .mscx) files directly - auto-converted to MIDI on open.
FFXIV Bard Mode
One-click FFXIV channel fixer for MidiBard2 - deterministic algorithm, no AI needed. Guitar variant switching, range clamping, validation.
FFXIV Voice Limiter
A live analyser for FFXIV bard performances: a toolbar gauge and a voice-load lane show where your arrangement would exceed the game's 16-voice ceiling and be silently degraded - so you can spot and fix hot-spots before you upload.
FluidSynth & SoundFonts
Built-in FluidSynth synthesizer with multi-SoundFont stacking and per-font gain - high-quality General MIDI playback right inside the editor.
Audio Export
Render your MIDI to WAV, FLAC, OGG, or MP3 (bundled LAME encoder) through the current SoundFont stack - full song or a custom range, with reverb-tail capture and per-channel solo.
7 Themes & MIDI Visualizer
MidiEditor AI brand, Dark, Light, Classic, Sakura, AMOLED, Material Dark, plus Follow-OS auto-switch. 10 color presets for note bars. Real-time MIDI visualizer for playback.
Lyric Editor & Visualizer
Full lyric timeline with drag, resize, split & merge. Tap-to-sync dialog, SRT/LRC/text import, and a karaoke toolbar widget with real-time color sweep.
Professional Piano Roll
Full-featured piano-roll editor with velocity/CC editing, quantization, copy/paste, recording, multi-track support, and smooth playback scrolling.
Editing Tools & Channel Splitter
Split multi-channel MIDI files into one track per channel with GM names, explode chords, delete overlapping notes, convert pitch bends to discrete notes, plus markers for Program Changes / CC / text events and C3-C6 octave guides.
Commodore 64 / SID
Open .sid tunes as editable MIDI, then hear them authentically:
play the converted MIDI through a C64 SoundFont, or the original SID through the
cycle-accurate libsidplayfp engine. A retro SF2/EMU toolbar switch flips between them.
Convert Tempo, Preserve Duration
Re-target a MIDI from one BPM to another while keeping the real-time playback length identical - one atomic, undoable action with Replace / Scale / Events-only modes.
MCP Server
Built-in Model Context Protocol server - connect Claude Desktop, VS Code Copilot, Cursor, or any MCP client and edit the open MIDI file directly through AI tools.
📷 Showcase
See MidiEditor AI in action.
🎨 Theme Preview
7 built-in themes - click to preview.
🆕 What’s New
v2.0.1 - July 2026
FFXIV Power Tools & QoL
- Hotfix: SID emulation follows the active tab - with several .sid files open, the C64 emulation played the wrong tune; each tab now plays its own
- FFXIV Drum Split - one click turns the GM drum kit into correctly named FFXIV percussion tracks, with a preview dialog and full undo (read more)
- Pitch-mapping kits - the house kit plus community kits transpose every drum onto its bard pitch, and an overlap cleanup removes the stacked hits FFXIV cannot play - instantly playable in game
- Channel fixer instrument re-sync - Preserve mode can now repair stale instruments from the track names, touching only mismatched channels (read more)
- Rich right-click menus - Clone, Merge, Move, Quantize, Transpose and more, directly on the Tracks and Channels panels (read more)
- Stability pass - a full-codebase review fixed Guitar Pro import hangs, note-glue truncation, plain-GM export remaps, AI cancel wedges and a set of undo and memory issues
⚖️ MidiEditor AI vs. Original
| Feature | Original MidiEditor | AI Edition |
|---|---|---|
| AI Copilot (MidiPilot) | ✖ | ✔ |
| Guitar Pro Import (GP1-GP8) | ✖ | ✔ |
| FFXIV Bard Mode | ✖ | ✔ |
| FluidSynth Playback | ✖ | ✔ |
| Audio Export (WAV/FLAC/MP3) | ✖ | ✔ |
| Themes | 1 | 7 |
| Note Color Presets | ✖ | 10 |
| MIDI Visualizer | ✖ | ✔ |
| SoundFont Management | ✖ | ✔ |
| Chord Detection | ✖ | ✔ |
| Split Channels to Tracks | ✖ | ✔ |
| Explode Chords to Tracks | ✖ | ✔ |
| FFXIV Drum Split (GM kit → bard percussion tracks) | ✖ | ✔ |
| Delete Overlaps Tool | ✖ | ✔ |
| Glue Notes Tool | ✖ | ✔ |
| Strum Tool | ✖ | ✔ |
| Convert Pitch Bend to Notes | ✖ | ✔ |
| Context Menu (Move Track/Channel/Transpose) | ✖ | ✔ |
| Octave Transpose | ✖ | ✔ |
| Lyric Editor & Visualizer | ✖ | ✔ |
| MCP Server (AI Tool Protocol) | ✖ | ✔ |
| Real-time Collaboration (LAN / WAN / PR / Discord) | ✖ | ✔ |
| Commodore 64 / SID Import & Playback | ✖ | ✔ |
| MusicXML Export | ✖ | ✔ |
| Cursor Time Display | ✖ | ✔ |
⬇ Download
Free & open source. Windows 10/11.
Portable ZIP - extract & run. No installer needed. · Download details · All releases