Play ChordRunner

Learn › The Difference Between Chord and Harmony, Simply Explained

New Released in April 2026

The Difference Between Chord and Harmony, Simply Explained

The difference between chord and harmony is simple. A chord is one group of notes played together at one moment. Harmony is the bigger picture: how notes sound together and how chords follow each other through a piece.

Play the demo

No account, no download. The demo has limited content. Advanced features are in ChordRunner Premium.

  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
  • Computer, phone or tablet
Am A C E

A chord is a snapshot

Am is a chord: A, C and E at the same time. Take a photo of the music at any instant and you see one chord.

Am: one chord A C E

Harmony is the film

Play Am, then F, then C, then G. Each one is a chord; the way they follow each other, and the feeling of moving and coming home, is harmony. Change the order and the harmony changes, even with the same four chords.

Am A C E
F F A C
C C E G
G G B D
The Difference Between Chord and Harmony, Simply Explained – ChordRunner

Practise it in a game

ChordRunner shows a chord name, you play it on a MIDI keyboard, a piano or a guitar through the microphone, and the game checks every note. Levels start with the chords on this page.

Play the demo

Harmony is also melody plus chord

Sing or play a melody note over a chord and they create harmony too. Over C, the note E blends; the note F rubs a bit and wants to move down to E. Hearing that pull is the start of an ear for harmony.

Learning harmony by yourself

  • First: know the main chords by name (major and minor).
  • Then: play common chord orders and listen to how they move.
  • Then: notice which chords feel like home and which feel restless.
  • Practise all of it on an instrument, not only on paper.

Common questions

Is a chord the same as harmony?

No. A chord is one set of notes at one moment. Harmony is how notes and chords sound together and move over time.

How can I learn harmony on my own?

Learn the main chords by name, play them in common orders and listen to how they move. Short daily practice on an instrument works best.

Can I check my chords with a MIDI keyboard or a microphone?

Yes. In ChordRunner a USB MIDI keyboard is detected automatically, and a piano or guitar works through the microphone. The game shows a chord name and checks the notes you play.

Is everything in the demo?

The demo has limited content. Advanced features are in ChordRunner Premium.

Your instrument is the controller.

ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.

Try the demo

Keep learning

Chord Progressions You Can Actually Play

Common chord progressions and why they work, plus a game mode where you define any progression and loop it wit…

Music Theory Games: Chord Theory You Play

Music theory games where you play the answer: chord qualities, symbols, 7ths, extensions and chords in a key, …

Chord Theory for Beginners in Three Simple Ideas

Chord theory for beginners in three ideas you can try on the keys right now: chords stack every other note, ma…

How to Build Chords From Any Note: Count the Keys

How to build chords on piano from any note by counting keys: major is 4 + 3, minor is 3 + 4. Works on every ke…

What Is a Chord in Music? The Simple Answer

What is a chord? Three or more notes played together. See it on the keyboard, hear why some notes blend, and l…

The Circle of Fifths, Explained by Playing

The circle of fifths explained by playing it: keys, sharps and flats, and a game whose progression system lite…