There are workarounds but if you want to stay in Biab then I can only think of the solution's here https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=460697#Post460697

The other way that is way too easy is in Reaper using ReaTrak to integrate Biab & Biab Plugin into Reaper.

You can get the chords/part markers into Reaper with "Biab Plugin Chords" or MusicXML,
you can generate up the Biab RealDrums directly in Reaper "Biab Drums".
Once generated you simply select the hold/shot and change it to whatever you like,
you can also adjust the timing and the volume.


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