Have you tried F5 where there is an option to change to any Key at a specific bar? F to C is pretty subtle. However, I do believe this change will be seen in the Notation Window only. BIAB will not transpose the chords if that is what you are trying to do?

Last edited by DrDan; 03/03/24 12:24 PM.

BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, Motu Audio Express 6x6 - My SoundCloud (Tip: No need to create a SC account to hear music - just hit ESC ).