I can put a Biab 16ths 100bpm into Reaper at 200bpm 8ths.
So I can enter the notes correctly to fit the Biab tracks.
The midi from Biab is halved (set rate=0.5)
The chords are imported with mxml.
Because the tracks are at 100bpm 16 instead of 200bpm 8 you will only get a maximum of 2 chords per bar.
Will think about it more in the morning.

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