My Zoom G2.1u has really nice pitch shifting features. You can choose between "normal" pitch shift, harmonic pitch shift (according to base tone & scale), it also has a designated mono pitch shifter (which I use as an octaver). When it comes to vocal harmonics, however, I prefer to add them layer by layer to the loop. To me it seems to be more conving. Buzap -- GMX startet ShortView.de. Hier findest Du Leute mit Deinen Interessen! Jetzt dabei sein: http://www.shortview.de/wasistshortview.php?mc=sv_ext_mf@gmx