I play some Bb instruments and I've answered this question a few times in the past. Where we sometimes miscommunicated was based on exactly how the song was entered.

You said you are reading an Abersold Bb book. Did you enter the song exactly as in the book, and did not use BIAB to transpose? If yes, I can talk you through it. One other question: did you enter the key of the song into BIAB? Or just leave it as C, the default? And, what is the key of the song as it appears in the fake book? If you can answer these questions, I or others will give you the steps so it looks and works correctly.


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.