I use an IPAD program called set-list maker to send midi messages to my PC to change rackspaces inside GP. Question – is it possible (utilizing your relative-transpose rackspace) to send an external midi message to GP to toggle the transpose button in this rackspace up or down an arbitrary amount? If so would you know the message to send?
Create a couple of buttons, learn any messages you want, and attach them to the GlobalTransposeUp and GlobalTransposeDown parameters in the system actions plugin for which full documentation is on our website
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