Great app so far! Thanks a lot! :)

At the moment i like the Nashville Number System as alternative chord notation. So i have a suggestion:

Describe the solution you'd like

Is it possible to add a switch in the menu with the transpose settings to change notation styles.
(similar to the options in this app: https://songbook-pro.com/)

So when there is a key defined in the file you get numbers instead of chord names and the key displayed at the top.

Additional context

• Nashville Number System info: https://en.wikipedia.org/wiki/Nashville_Number_System
• ChordPro key Tag info: https://www.onsongapp.com/docs/features/formats/chordpro/

{key: ...} or {k: ...} or {ok: ...} The key of the song written as a key with enharmonic preference and an optional "m" to indicate minor. - alphabetic, e.g. Bb or Em