Movable Major & Minor Chord Shapes in Double-C / Double-D Tuning. Learn all Major and Minor Chord Shapes in several positions around the neck for double-C tuning (identical to "double-D" tuning in terms of string relationships and fingering shapes). We'll look at "I-IV-V" (Tonic, Dominant, & Sub-Dominant) for common keys; chord scales; the Circle-of-Fifths & common Circle-of-Fifths progressions; and playing Chord Melody (each melody note is the top note of a full-chord or partial-chord shape).