PIXELOKAY CREATIVE LAB

Music Theory Studio

Find the notes. Hear the harmony. Explore chords, scales and progressions on an interactive piano — right in your browser.

♪ Interactive piano✦ Chords & scales↓ MIDI export

YOUR INSTRUMENT

Interactive piano Ready to play

Tap keys, or use your computer keyboard to select notes and hear them.

Sound is on

SELECTED NOTES

Choose notes above to begin.

EXPLORE & CREATE

One studio. More ways to learn.

Build your musical intuition one note at a time.

INSTANT ANALYSIS

What chord is this?

Play or select two or more different notes on the piano.

♪

Let's find your chord.

Pick a few piano keys. We'll recognize the notes and show matching chord names, intervals and inversions.

CHORD BUILDER

Try a known chord

Choose a root and quality, then see its notes light up.

Root note

Chord type

1 · 3 · 5

NOTE VISUALIZER

Circle of fifths

Select a note to hear it and add it to your piano selection.

CIRCLE OF FIFTHS

LEARN AS YOU PLAY

A little theory goes a long way.

Learn the essentials without opening another tab. Try any example on the piano above.

01 / NOTES

What is a musical note?

Western twelve-tone equal temperament uses 12 pitch classes, from C through B, including sharps and flats. The piano repeats them in octaves. Higher notes vibrate faster.

02 / CHORDS

What makes a chord?

A major triad combines the root, major third and perfect fifth (0, 4 and 7 semitones). A minor triad uses a minor third instead (0, 3 and 7).

03 / SCALES

How does a scale work?

A scale orders notes by an interval pattern. The major scale follows W–W–H–W–W–W–H, where W means two semitones and H means one.

04 / PROGRESSIONS

What are Roman numerals?

Roman numerals show chord positions relative to a key. I–V–vi–IV in C major is C–G–Am–F, and the same pattern can be transposed to any key.

The scale finder uses exact pitch-class inclusion, not audio recognition. This studio uses an equal-tempered synthesizer and standard pitch reference A4 = 440 Hz. It is a learning and composition aid, not an acoustic piano sample library. Sound begins only after interaction, subject to browser audio policies.

Using Music Theory Studio

Select piano notes to explore matching chords or scales, then build and audition a progression. Export MIDI for another music application and JSON to preserve the editable project.

Recognition compares selected pitch-class sets; it is not live microphone recognition. Playback uses a browser synthesizer rather than realistic sampled piano, and MIDI export is distinct from a rendered audio file. Browser history and storage are best effort.

Choose note matching, a progression or a MIDI handoff

Selected piano notes: explore chord and scale matches based on the chosen pitch classes.

Progression playback: audition the supported arrangement through browser synthesis.

MIDI: hand note-event information to another music application; the receiving instrument determines its sound.

Project JSON: preserve supported editable theory/progression settings for continuing here.

Practice: inspect a C-major note set

Select C, E and G on the piano and inspect the chord matches.

Add the intended chord to a progression and audition it, checking note choice and order.

Save project JSON for editing or MIDI for a separate music workflow.

This is an authored theory exercise. C-E-G is a reference note set, not fresh recognition or audio output.

Chord and MIDI questions

Can the chord matcher identify a song through my microphone?

No. It compares the notes you select with supported chord and scale patterns. It does not listen to live sound or transcribe an audio recording.

Why does exported MIDI sound different in another application?

MIDI carries note events rather than the browser synthesizer's rendered audio. The destination's instrument, sound library and playback settings affect the result. Keep JSON when you need to continue editing the supported project here.