Classic
MIDI · Recording · Visualization
See the music. Steal the show.
A MIDI visualizer and recorder for macOS, Windows and Linux. Plug in your keyboard, hit record, and watch every note come alive as piano rolls, sheet music, chords, guitar, drums and light.
Built with Java · Kotlin · JavaFX
macOS · Windows · Linux
// How it works
Three steps to the spotlight
01
Plug in
Connect any MIDI keyboard or controller over USB. MelodyMatrix finds it instantly — no drivers, no fuss.
02
Hit record
Play. Every note, pedal and velocity is captured with microsecond timing, powered by virtual threads.
03
Put on a show
Pick a view — or five — and watch your performance come alive on screen.
// The views
One take, endless shows
Click any view to watch it in action. Each one reads the same recording and paints it a completely different way.
Visual FX
Piano with Effects
Notation
Treble and Bass Clef Staff
Notation
Chords on Staff
Data View
MIDI Events
Data View
Note Charts
Theory
Circle of Fifths
Theory
Chord Relationships
Guitar
Guitar Note
Guitar
Guitar Chord
Audio
Audio Spectrum + MIDI
Percussion
Drum Kit
Hardware
LED Strip
// Download
Grab it. It's free to try.
Available for macOS, Windows and Linux, with auto-updates via jDeploy. Head to the download page to pick the right build for your machine.
Download ↓
macOS · Windows · Linux
// Latest release
MelodyMatrix 2.0.0
Fresh off the press, released on 2026-10-16
// Made by people
Two people. One band.
MelodyMatrix is not a product from an anonymous AI factory. It's built, tested and supported by a father and his son: a developer and a musician who wanted to see what's happening in their music.
Developer · Dad
Frank Delporte
Java Champion, author of "Java Programming for Raspberry Pi", host of the Foojay Podcast and maintainer of open-source projects like Pi4J. He designs the architecture and writes the Java and JavaFX code.
webtechie.be →
Musician · Son
Vik Delporte
Pianist, drummer and composer, behind the drums since he was three. Vik decides how MelodyMatrix should look and feel for a musician, tests every release with his own playing, and keeps the app honest.
vikdelportemusic.be →How we use AI
AI is a tool that lets us build more, and faster. We treat it like a colleague in the team: it works within strict guidelines, and every design decision, line of code and release is reviewed and tested by the two of us.
Questions, ideas or a problem? You'll reach us, the real us, at hello@melodymatrix.rocks · More about us →
Now in the app
Learn to play, step by step
Lesson series right in the app: play along with the piano and the sheet music at your own tempo, from your first notes to jazz chords.
