TheBrowserBox
Made for your browser
Music & Learning Tools

Chord Explorer

Explore chord pitches and inversions, hear chords and play their arpeggios.

Your content stays on your device Free, with no account
Chord ExplorerLocal sound & practice

Sound & practice settings

Root octave
Pitch labels

Ready. Sound or microphone access starts only from your action.

Behavior, limits & privacy

Equal-tempered pitch patterns at A4=440 Hz. Nine chord types with valid inversions; Play chord and Arpeggio use the displayed notes. Note labels are sharp or flat pitch-class spellings, not full theoretical enharmonic notation (double accidentals/score engraving are not provided). Changing a choice stops previous playback.

All processing stays in this browser. Hidden documents, Reset, workflow switching and page exit stop audio and microphone access. No uploads or stored performance/history. Optional JSON reports download only when chosen.

Play & explore

—Status
—Observation
—Details

Computer keys A W S E D F T G Y H U J K play the first octave while this keyboard has focus. Space/Enter plays the focused note. Tab leaves normally.

Highlighted keys are the displayed pitch pattern. Play individual keys or the full pattern. Changes stop prior playback.

A FEW SIMPLE STEPS

How to use Chord Explorer

  1. Choose the visible settings. Start at a low device volume for playback; the tuner requires explicit microphone permission.
  2. Use the controls next to the instrument, beat or live tuning preview.
  3. Equal-tempered pitch patterns at A4=440 Hz. Nine chord types with valid inversions; Play chord and Arpeggio use the displayed notes. Note labels are sharp or flat pitch-class spellings, not full theoretical enharmonic notation (double accidentals/score engraving are not provided). Changing a choice stops previous playback.
  4. Stop or Reset when finished. Reports are optional; hiding, switching or leaving releases local audio and microphone access.
PRIVATE BY DESIGN

Why use this tool?

Instruments and practice run locally using self-hosted code and synthesized sound. Only the tuner requests microphone audio, after Start; its samples are analysed locally without recording, monitoring or upload.

Tool inputs stay in your browser. Only your theme preference is saved on this device.

A few things worth knowing

How does this tool work?

Equal-tempered pitch patterns at A4=440 Hz. Nine chord types with valid inversions; Play chord and Arpeggio use the displayed notes. Note labels are sharp or flat pitch-class spellings, not full theoretical enharmonic notation (double accidentals/score engraving are not provided). Changing a choice stops previous playback.

Does it upload audio or store practice history?

No. Generated sounds, local observations and practice results remain in the active browser page. Only the tuner requests microphone permission, and no microphone samples are recorded or uploaded.

What happens on Stop, hidden tab or switching?

Playback, scheduled notes, microphone tracks and analysis are stopped. Reset and workspace switching release working state. A downloaded JSON report remains under your control outside the application.

Related tools

Explore Music & Learning Tools

Virtual Piano

Play a responsive two-octave synthesized keyboard with mouse, touch or focused computer keys.

Open tool

Drum Pad

Play eight locally synthesized percussion pads using touch, mouse or focused keyboard shortcuts.

Open tool

Simple Synthesizer

Shape a playable oscillator keyboard with live waveform, filter and envelope controls.

Open tool