Welcome to the forum.

I don't know that this is going to help you, but here are two settings in BIAB that might put you on the right track if it's possible at all.

Go to Opt., Preferences, OutputChords. You can set BIAB to trigger devices that expect just chord info that way.

Also, in File, Print, you can set the program to print only chords. Perhaps redirecting the printer to a file would produce something that could be 'fed' to your Android app.

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Or - if your Android tablet can display a PDF file, print the chords to a PDF using Cute PDF or some other such program in place of a printer, and just read the file like you would any regular document.

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Or - get an iPad instead, and use BIAB's native support as of version 2011, and get ahead of your keyboard player.

BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors