Detect the musical key of any tune whether in the studio or on the go. Instantly share and sync the musical key with your Auto-Tune session running on your computer DAW. Auto-Key detects the key by capturing a few seconds of audio and returns the most likely musical key. It also returns the diatonic key. You can use Auto-Key mobile on any audio coming from a speaker or from an acoustic instrument or a voice. Tap on the Auto-Key logo in the app home screen to find the key. Auto-Key Mobile was developed by Antares Audio Technologies, the inventors of Auto-Tune®.