Harmony Playground • Piano roll + chord flow

Write chords and melodies with a clearer musical view.

Use the piano roll to build harmony visually, test chord ideas quickly, and export phrases you can carry straight into the rest of your workflow.

Full piano roll Place notes, stack chords, and hear harmonic movement in context.
Chord shortcuts Load useful starting points without losing sight of the notes underneath.
Export-ready Bounce phrases out when they are ready to keep growing in a bigger project.
musicproducerlab.com/harmony-playground
Chord layer
Melody layer
Visual harmony, quick chord building, scale awareness, and export in one page.
Walkthrough

See how the harmony workflow fits together before you start writing notes.

This overview keeps the focus on what matters: a piano-roll-based space where you can build progressions, test melodies, and hear the result quickly without breaking the musical thread.

Jump to the piano roll Open the full lessons
120 BPM
Piano Roll Sequencer

Build Your Harmony

Click on the piano roll to place notes. Build chords and melodies.
Quick Chord Presets

One-Click Chords

Click a chord preset to instantly add it to the current bar. Great for learning and quick composition.

Full Piano Roll

Multi-octave piano roll for chords, melodies, and bass lines. Click to place notes, drag to adjust length.

Multiple Instruments

Choose from piano, electric piano, synth, strings, and organ. Each with realistic samples.

Scale Highlighting

Enable scale highlighting to see which notes are in your selected key. Perfect for learning and staying in key.

WAV Export

Export your progressions and melodies as high-quality WAV files. Use them in your DAW projects.

Learning Tool

Practice chord progressions, voice leading, and melody writing. Apply what you learned in the lessons.

Free Forever

No sign-up, no limits, no payment. A gift to music producers learning harmony and melody.

Tips for Using the Harmony Playground

Building Chord Progressions

Stack 3-4 notes vertically to create chords. Try common progressions like I-V-vi-IV (C-G-Am-F) or ii-V-I (Dm-G-C).

Voice Leading

Keep common tones between chords and move other notes by small steps. This creates smooth, professional-sounding progressions.

Adding Melody

Place single notes above your chords. Target chord tones on strong beats (beats 1 and 3) for stable, grounded melodies.

Exporting

When you're happy with your creation, click "Export WAV" to download a high-quality audio file. Import it into your DAW and keep creating!

Want to Learn More?

The Harmony Playground is free practice space. To learn professional techniques step-by-step, check out our complete harmony and melody curriculum.

Browse All Lessons