One of the crucial ways that you can customize your VE-20 to the music you perform, is to to set the Key of a Preset to match a particular song, then save your changes.
To do this:
1. Press MENU.
2. Turn the SOUND knob until you see MASTER.
3. Press Right Arrow button until you see the Key setting.
4. Turn the sound knob until the desired key is selected.
5. Press MENU three times.
6. Press the Right Arrow button.
7. Press the Left Stomp Switch.