Audio analysis · Free utility

Estimate the key and mode of a song

Analyze pitch-class energy in an audio file and review the strongest key candidates. The result includes Camelot notation without pretending every ambiguous song has one certain answer.

Audio is analyzed locally in your browser; raw audio is not uploaded. Sign-in is requested only when you run the tool.

Working surface

Set the direction

Sign-in is requested only when you run the tool.

Indexable example

See the job before you run it

This is a static example, not a pre-generated claim. Your actual result depends on the input you provide.

Example input

A synth-pop track with a stable minor-key chorus.

Example output

Likely key: E minor, Camelot 9A. Alternative candidate: G major, 9B. The relative-key relationship is noted.

How it works

A short, reviewable workflow

  1. 01

    Upload the track

    Choose a section with clear harmony rather than only drums or noise.

  2. 02

    Review top candidates

    Compare the likely key with its relative or closely scoring alternatives.

  3. 03

    Confirm by ear or instrument

    Use the estimate as a starting point for final musical decisions.

Useful when

Three practical use cases

Set an AI music brief

Add a tonal center to a prompt when it matters.

Plan harmonic mixing

Use Camelot notation to find nearby compatible tracks.

Prepare a remix

Estimate the key before transposing or adding parts.

Questions

What to know first

Can one song have several keys?

Yes. Modulation and ambiguous harmony can produce multiple plausible results.

What is a Camelot code?

It is a DJ-friendly notation that groups musical keys for harmonic mixing.

Is the result a substitute for musical verification?

No. Confirm important decisions by ear, instrument, or trusted production software.

Keep working

Next step

Take the useful part into a real creation.

Create music with a key direction