text is a tough way to do audio — ⇧ SHIFT — ⌃ CONTROL — ⌥ OPTION — ⌘ COMMAND
Create Key Signature Change
Change the key signature for the current project.
Create key signature changes in Logic Pro — Apple Support
When Enable Complete Features is selected in Logic Pro > Preferences > Advanced, you can add key signature changes to a project in the Signature List, Signature track, or Score Editor.
Configure Global Tracks… ⌥G
Choose the global tracks to be shown. This is a much easier way to get the global tracks to be displayed. Normally I control-click in the track area and turn off the ones I don’t want…
Show and hide global tracks in Logic Pro — Apple Support
You can also assign and use any of the following Show/Hide key commands for each individual ruler track: Marker, Transposition, Signature, Tempo, Beat Mapping, and Movie. The key commands work directly, without having to open the Global Tracks Configuration dialog.
Show/Hide Signature List
Shows the signature list. Key signatures can be seen in the control bar LCD, on the Signature Track, and in the Signature list.
There is a separate command for displaying the Signature List in a separate window — ‘Open Signature List…’.
Show/Hide Signature List opens the List Editors panel (on the right side of the Arrange window) and selects the Signature list.
Logic Pro Signature List interface — Apple Support
The Signature List shows all the time and key signature changes in your project, as well as any score symbols in the project score. You can create, copy, move, and delete time and key signature events in the Signature List.