Real-time MIDI transformation for musicians who want more control.

MidiWarp sits between your MIDI keyboard and your DAW. It intercepts your signal, runs it through scripts you write, and sends the result to a virtual MIDI port your DAW listens to. Transpose notes, remap controls, filter velocities, convert pitch bend to CC, whatever you need, without touching your DAW settings.

Scripts are plain Python. No special syntax. If you can write a basic if statement, you can write a script.

• Live event feed: see every MIDI event in real time as you play, including what changed after your scripts ran
• Script pipeline: write multiple scripts that run in sequence; drag to reorder
• Simple scripting API: read and mutate events with human-readable variables (note, velocity, cc_num, pitch), no raw bytes or hex
• Note name constants: use C4, Fs3, Bb5 directly instead of numbers
• AI script generation: describe what you want in plain English and get a working script back (requires a free Gemini API key)
• Built-in editor: line numbers, syntax hints, and a full scripting reference
• Auto setup: installs and configures loopMIDI automatically on first launch
• Runs in the background: minimizes to system tray

1. Download the latest MidiWarpInstaller.exe from Releases
2. Run the installer
3. MidiWarp will handle installing loopMIDI automatically on first launch

No manual driver setup needed.

1. Launch MidiWarp
2. Click the orb on the home screen and pick your MIDI keyboard from the dropdown
3. Play some notes and watch events show up in the feed
4. Go to the Scripts tab to start writing transforms

Transpose all notes up an octave:

if event_type in ('note_on', 'note_off'):
    note += 12

Remap C5, E5, F5 to D5:

if event_type in ('note_on', 'note_off') and note in (C5, E5, F5):
    note = D5

Convert pitch bend to CC11 (Expression), clamped at zero:

if event_type == 'pitchwheel':
    send_cc(11, max(0, int(pitch / 8191 * 127)))
    block()

Drop ghost notes (velocity below 20):

if event_type == 'note_on' and velocity < 20:
    block()

• Python
• pywebview
• mido + python-rtmidi
• loopMIDI by Tobias Erichsen
• Google Gemini API
• psutil
• Inno Setup

Built for Lynx Hack 2026 at the University of Colorado Denver by Team YAMI.

MIT. Do whatever you want with it.