1. Connect your MIDI keyboard using either USB MIDI or a 5-Pin MIDI cable.
2. Navigate to the Menu screen, then choose Global Settings > MIDI tab.
3. Make sure the MIDI Channel is set to Omni.
4. On the rig screen, tap on an empty block and select Vocal > Auto-Tune.
5. Double tap the Auto-Tune block to access its settings page, then set the Key and Scale fields to MIDI.
Following this, the Auto-Tune pedal will correspond to any key held down on your MIDI keyboard.