Progressions in F — 5-String Banjo

Every chord the key of F owns, charted on gDGBD and ready to pick.

F major harmonises to F – Gm – Am – A# – C – Dm – E°; F minor to Fm – G° – G# – A#m – Cm – C# – D#. Each chord links to its 5-String Banjo voicings, so a tune in F becomes a short list of shapes before the first repeat.

Then check the key against the short g: some keys let it ring free through every change, and some make it a note you have to work around. Knowing which is which is most of what "playing in a good key" means here.