VirtualDJ 8 User Manual
VirtualDJ’s sound engine analyzes a song’s key and provides the ability to adjust the key up or down in one semitone increments.
Use the (-/+) buttons on the Key Control panel to move the Key one semitone up or down.
Turn on/off the Master Tempo (Key Lock) with the padlock button. If Master Tempo is enabled the Key of the track will retain its value if the Pitch (tempo) is changed.