DNJ try to avoid working in chordal mode with any harmonizer.The best way it works is in scale mode.Too bad Yamaha doesn't let us create our own scales.It would be much much better.
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MIKIMIKI

TYROS 5,BEHRINGER X32PRODUCER,YAMAHA DSR112,JBL PRX618s XLF,EV ZLX12p,SENNHEISER E945,....ETC