Read the result without over-trusting it

Written for Key Detector 2.0. Chords, charts and practice sequences are beta: check them by ear. Images use simulated data; they illustrate the interface and are not evidence of audio accuracy. The Chrome Web Store may still be serving an earlier version for a few days after release.

Before you start

A completed Detect or file analysis.

Steps

Key combines a note and major/minor mode. Compare it with your instrument.
Tonal affinity describes the model’s match. A displayed 95% is not a 95% probability that the key is correct.
Check the alternative keys, especially after a sparse intro or a modulation. Analyze another passage.
BPM is the pulse. If 70 sounds like 140, use ×2; use ½ for the opposite reading.
General is the default style. If a worship passage sounds major but reads minor, try Worship and compare another passage; no style guarantees the right answer.

Expected result

You have a candidate key and a usable pulse, with uncertainty understood.

If it does not work

Live can compare passages as the music changes. A tuning estimate in Hz/cents is different from the song’s key; the microphone tuner is a separate tool.

Access

Detect/Live are Free at 15/30 seconds; Camelot notation is Pro/trial.

Interface preview with simulated data, 6 Oct 2026. Not a verified audio result.