Here's an update for the chord player it will set the beat or bar change at startup:
https://www.dropbox.com/s/ulm7mu6xszds4qe/ReaTrak%20midi%20chord%20input%20to%20region%20chord%20player.lua?dl=1
Action menu > Show action list add whatever hotkey you like:

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Reaper-Toolbar-Shortcuts.png (28.59 KB, 250 downloads)