Live Key & Mode Detector (Web MIDI)

Play your MIDI keyboard or typing keys. The app guesses tonic + mode and shows the current chord in real time.

MIDI Input

Mode Families

Memory Half-Life

Tonic Bonus

Out-of-Scale Penalty

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Waiting for notes…

Use typing keyboard Octave: 4

White: A S D F G H J K L ; ' | Black: W E T Y U O P | Z/X = octave ↓/↑ | Tab = sustain | Esc = panic

Audio Wave Volume

Chord

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