Progressions in E — 5-String Banjo

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

E major harmonises to E – F#m – G#m – A – B – C#m – D#°; E minor to Em – F#° – G – Am – Bm – C – D. Each chord links to its 5-String Banjo voicings, so a tune in E 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.