Song Key Finder

What is Song Key Finder?

Analyzes audio to detect the musical key and scale. DJs use it for harmonic mixing, and producers use it to match samples to the right key.

How to use

1. Upload an audio file (MP3, WAV, OGG, FLAC) or record directly from your microphone
2. Wait a few seconds while the audio is analyzed
3. View the detected key, scale, BPM estimate, and Camelot notation for DJ mixing

Result

A DJ wants to mix two tracks harmonically. Upload the first track — it detects A minor (8A Camelot). Now you know compatible keys are 7A, 8A, 9A, or 8B for smooth transitions.

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