How would the following scenario work:
MicroArranger midi'd to laptop with vArranger. TX ch 1 accross the board. Midi into SD2 module.

So far,there shouldn't be a problem as I can control vArranger with my touch screen, and KB just sending note messages. The question is how fast I can switch midi off and play MicroArranger by itself ?

Not knowing Korg well enough, I am wondering if there are too many hoops to jump in live play.
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pa4X 76 ,SX900, Hammond SK1, Ketron SD40,Ketron Event X Centerpoint Space Station, Bose compact