Key Detector 🏠 Jazz Lab

🔗 Enter a URL to detect the key

Not started yet — press start while facing a live band's sound
⏸ To pause: press \'Start Listening\' again (it becomes \'Stop Listening\') to pause — the microphone will be released. 🆕 To switch to a new song: no need to toggle the mic off and on, just press \'Analyze a New Song\' to clear the current stats and restart from 0 seconds.

🎧 Live reading (~3 second memory)

🎯 Suggested key (accumulated over the whole song)

🎼 Transposing-instrument chart (calculated from the \'suggested key\')

C
Piano / Guitar / Flute / Bass
B♭
Trumpet / Tenor Sax / Clarinet
E♭
Alto Sax / Baritone Sax
No key detected yet Click the keyboard to try a note
🎧 This is an ear-training aid for live reference only — not a definitive answer.