Song Key Finder

About

Song Key Finder is a privacy-first Chrome extension that quickly detects the musical key and BPM of any song — directly from YouTube, Spotify, SoundCloud, or any other website with audio, plus your own audio files (MP3, WAV, FLAC, AIFF). No uploads. No signup required. Works entirely in your browser. Audio never leaves your device.

What you can do:
✅ Detect key and BPM from any streaming audio or local file
✅ Switch between DJ Mode (Camelot Wheel: 11B, 10A) and Theory Mode (A Major, key signature)
✅ View a playable piano keyboard showing exactly which notes belong to the detected scale
✅ Hear the root note with one click – check the result. Also perfect for vocal warmups or tuning instruments
✅ See compatible keys for harmonic mixing (e.g., 11B → 10B, 12B, 11A)
✅ Save your last 10 analyses locally – optional sign in syncs across devices

Why musicians, DJs, and producers prefer this tool:
➤ No more guessing games – get accurate key and BPM detection whether you're sampling, mixing, or learning
➤ One tool for two workflows – DJs get Camelot codes; musicians get theory depth
➤ Always ready – runs silently in the background, analyses any tab in seconds (typically 5–15s)

Perfect for:
- DJs preparing harmonic sets – use Camelot Wheel compatibility to build smooth transitions
- Producers sampling tracks – know the key before importing into your DAW
- Singers who need to find the right key – play the root note and match your voice. Essential for acapella performances.
- Music students learning theory – visualize key signatures, scales, and relative minors
- Musicians jamming along – identify the key of any song in seconds
- Anyone searching for a way to find the key of a song quickly – no music theory degree required

How to use (3 simple steps):
1️⃣ Install the extension and pin it to your toolbar
2️⃣ Listen to any track in your browser – or upload an audio file
3️⃣ Enjoy the results
That's it.

We don't try to be everything. Song Key Finder is a focused tool for key and BPM detection – built for musicians who need accurate answers fast. If you want a full DAW or music production suite, there are other options. But if you just need a reliable music key finder or BPM key finder – this is for you.

Try it once – and you'll wonder how you managed without it. ✨

Questions? Suggestions? We're genuinely here to help. Drop us a line anytime 💌 [email protected]