I am not any software whiz, I'm afraid. I had been using an Axiom 61 controller which allowed me to layer or split with ease by configuring the zones and simply calling up an instrument for different zones, be it split or combi. That is the extent of my knowledge.

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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact