Don't just watch music theory.
Play with it.
From the world of Pur Pasteur. We took the visual style you know from our videos and turned it into an interactive playground.
You know us for making music theory fun and easy to digest on YouTube. But there is a limit to what you can learn just by watching a video. To really understand how music works, you have to get your hands dirty. You need to touch the sound, move the notes, and see the reactions in real-time.
That is why we built this app. It bridges the gap between passive watching and active learning.
Try it yourself
These are real interactive tools from our curriculum. Go ahead—click, drag, and explore.
Overtone Visualizer
Every musical note contains a hidden world of overtones. Click to play and see how a single note is actually made up of multiple frequencies stacked on top of each other. This is the foundation of why instruments sound different even when playing the same pitch.
Intervals
Intervals are the building blocks of melody and harmony. Drag across the keyboard to hear and see the distance between any two notes. Understanding intervals is key to recognizing chord qualities and melodic patterns.
Chord Graph
See how chords in a key relate to each other. Click any chord to hear it and watch the connections light up. This interactive map reveals the harmonic pathways that composers use to create tension and resolution.
How it works
We replaced dry textbooks and static diagrams with an interactive engine.
Interactive Learning
Don't just read about a concept—interact with it. Play with musical elements directly in your browser.
Structured Curriculum
A clear, step-by-step path from basics to advanced concepts. No more jumping between random tutorials.
Visual & Audio Feedback
See the theory and hear the result instantly. Connect the "rules" of music to actual sounds.
Why we made this
We wanted to create the tool we wish we had when we started. If you enjoy the explanations on the PurPasteur channel, you will feel right at home here. It's the same vibe, just hands-on.