Type: (wait for it...) G7alt

For anyone reading who doesn't recognize this, it's one of BIAB's better features that this chord type is supported. A 7alt chord is one in which neither the 5th of the chord nor the 9th is perfect/major respectively. In other words, you can get a flat 5, a sharp 5, a flat 9, and/or a sharp 9, and any combination of those, such as your #5b9 chord above. The 7alt can be used when you would have written a 7(#9), 7(b9), 7(#5) or 7(b5), and it often gives more 'interest', particularly in jazz. The new BIAB Natural Arrangement feature generally chooses the 'right' one for a progression.

A 7alt chord is a very cool chord to blow on.


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.