Pedwards32 is right, assuming you have version 2015 or 2016. Use a choice in the right-hand column.

I'm wondering why the OP had an original key of Bb, though.

Finally, it does make a difference in BIAB to set the correct key. The most obvious is the correct enharmonic choice, i.e. Is it D# or Eb?



BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Fender Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.