A professional, high-contrast live chord monitor and detector built for keyboard players, synthesists and live performers using Yamaha arranger keyboards or standard USB MIDI controllers.
Real-time Note On/Off MIDI with under 10ms latency — your chord display is as instant as your playing.
Release your hands and the chord stays on screen for 5 seconds so you and your bandmates still see it.
One click collapses the panels, expanding the monitor to full screen — legible from several feet away.
Fully replicates physical pitch bend and modulation wheel movements directly on screen in real time.
Chord Monitor: simulates a glowing hardware LCD showing the exact chord. Text scales down for complex chords (e.g. Ealt(b9)/C) so they never clip.
Active Voicing: shows the active note stack with a clear underline highlighting the root.
A responsive vector keybed (C2–C7) showing real-time physical key presses for instant visual feedback.
The interface is high-contrast and optimized for low-light stage environments — confidence that your chords and notes are clear at a glance.
Transform your live performance with ArrangerChord. 100% free, no login.
If you see an "Unidentified Developer" warning, right-click the app and choose Open, or use System Settings › Privacy & Security › Open Anyway.
If Microsoft Defender SmartScreen blocks the app, click "More info" then "Run anyway".