So here's the situation. My keyboard rig is a USB controller keyboard running Mainstage 3 on a Macbook Pro. For redundancy I want the USB midi from the controller keyboard to go to 2 identical Macbook Pro's both running exactly the same concerts in Mainstage. Then if there's any issue with one Macbook it won't make a difference to the show. As these are to be used for ticketed theatre gigs I can't afford any issues or have time for a reboot etc ... I need to be covered
So anyone have an idea of the best way to do this ?