D dorian chordson the mandolin
Main chords: Dm (i), C (♭VII), G (IV)
The scale: D E F G A B C
Drones: Open D and A ring in D dorian; G and E fit the key too. The courses are G D A E, low to high.
Common progressions
- i – ♭VII – i: Dm – C – Dm
- i – ♭VII – IV – i: Dm – C – G – Dm (the major IV is the dorian colour)
- i – ♭III – ♭VII – i: Dm – F – C – Dm (up to ♭III (C in A dorian) and home through ♭VII)
Basis: A count of 686 session tunes found A and E dorian 19%, against 3% for E and B minor (Brendan Power forum), so minor-sounding tunes are mostly dorian; the IV is major, and ♭VII leads home.