F major chordson the mandolin
Main chords: F (I), B♭ (IV), C (V)
The scale: F G A B♭ C D E
Drones: Open A rings in F major; G, D and E fit the key too. The courses are G D A E, low to high.
Common progressions
- I – IV – I – V: F – B♭ – F – C (a plain backing for many reels and jigs)
- I – V – I: F – C – F (polkas and simple tunes)
- I – vi – IV – V: F – Dm – B♭ – C (a B part that wanders, or a song)
Basis: DADGAD Guitar blog (2009), the Chiff & Fipple forum, and common session practice: most major-key tunes use I, IV and V; vi now and then.