C to D7 Chord Change
C to D7: what changes
Moving from C Major to D 7 changes 4 of the guitar's 6 strings — a moderate change.
Keep a finger down through the change — fret 1 on the B string stays put on both chords.
Songs that use C and D7 together
C and D7 appear back to back in 4 songs in the String Warrior songbook: