Hey man ! NO MORE MYSTERY! The setting is this: Leave the scale setting on deafault i think is major scale. Then go to key setting and here is the trick: just put the 4th note of the Song key scale. EXAMPLE: If the key of song is C your gonna put F, if the key of the song is G your gonna put C If E then the key goona be A and so... Leave the detune knob on deafault that is 0. Then turn up the retune knob to 0. And last put the tracking knob on 15 to 17. And there you go. But warning this setting don't work on voice with vibrato only on flat melodies. If your singer made a lots vibratos on the song ,just listen to the flat segments and apply it. Good Luck! jeam 