You can find below some explanations about various settings you may encounter in SongKit.
These settings define how notes are represented, which instruments to use, how to compute chord voicings, or what are your custom chords and voicings.
These settings define how songs are represented by default. These values are used when you never opened a song. Otherwise, the app uses the last display configuration you used for this song.
You can manage here your song templates, instruments, custom chords, etc.
This section gather actions that should be performed only if something abnormal occurs. They allow to reset some things to their defaults state without having to uninstall/reinstall the whole app.