F mixolydian chordson the mandolin
Main chords: F (I), E♭ (♭VII), B♭ (IV)
The scale: F G A B♭ C D E♭
Drones: Open A rings in F mixolydian; G and D fit the key too. The courses are G D A E, low to high.
Capo 3: play it with D mixolydian shapes, and every open course is in the key.
Common progressions
- I – ♭VII – I: F – E♭ – F
- I – IV – I – ♭VII: F – B♭ – F – E♭ (reels in D or A mix)
- I – ♭VII – IV – I: F – E♭ – B♭ – F (down and back home)
Basis: DADGAD Guitar blog (2009) and common session practice: the flat 7th's major chord (C in D mix) answers the tonic.