In version 2016, this is directly supported. Type: CMaj7b5

I think this has worked for many versions now.

Next time you get stuck, do a right-click in the Chordsheet and select Chord Builder. Then (here's the trick) click on the pull-down that is labelled Maj over the Play button. You will see all the chord types supported by BIAB, and how to spell them. It includes some pretty exotic stuff.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.