I would have spelled the chord, from root up:

C
E
G which you don’t have
Bb - a flat 7 rather than a sharp 6
Db - flat 9
D# - sharp 9, although I would use Eb to look better

This chord is not directly supported in BIAB.

This is assuming as Gordon did that the root is C. When you start a chord with Cb it is ambiguous whether that means B, or C with a flatted ninth.

Assuming the root is C, you have two possibilities I can think of:

1) use C7alt and hear a combination of sharp or flat 5th and/or sharp or flat 9th

2) write a C7#9 chord then manually edit it using the new Playable RealTracks feature in BIAB 2023, add the b9 and possibly take out the G
Then copy this chord as needed.



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; Presonus 192 & Faderport 8, Royer 121, Slate VSX, Adam Sub8 & Neumann 120 monitors.