Does anyone know of a great pitch shifter? Our guitarist has a roland amp with built in midi and outboard midi pickup on his guitar, if we decide to change keys with only a moments notice, he just presses a couple of buttons on his amp and it sounds flawless. Do delay in it, no weird sound glitches. Does anybody make something like that for bass? Maybe in a pedal? I messed with a couple of stomp boxes, and they sound fake, and with a few ms of delay. Any help appreciated!