1) Double Stops and Modes for MandolinThis is basically a reference book that shows double stops for the mandolin. It includes the most common keys played in bluegrass and old time music. C,G,D,A,E,B,F,Bb,F# (V chord in B) and Eb (IV chord in Bb).
It also includes the more common modes (in all the keys) that you would see in tune books. Major (Ionian mode), Mixolydian, Dorian, and Aeolian (the natural minor scale). Also the harmonic minor scales as well.
Self published. Asking $15.95. Overseas orders will be a $27.95. That includes the shipping.