Free Music Key Detection Online

Upload your MP3 composition and get the most probable music tonality of it.

Tonality detection technology is a small part of WIDI Recognition System, a complete Audio To MIDI desktop solution:

Free trial download is available.

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Widisoft company develops software for sound and music processing, including Audio to MIDI VST and AU plugins.

Key detection service is provided by Widisoft without any warranties. Contact us at .

This service is currently in BETA. Bugs or strange behavior may exist.