Does anyone use the Vocoder setting with the Right Hand (Split Keyboard) used to create the harmony? I have had the SD1, PA1Xpro and now the G70. I have utilized this method on all and it works best for me. So far the G70 sounds the best with the SD1 a very close second. The PA1x I did not care for. I have never tried the Harmonizer on a Yamaha KB.