D 7 Chord on Mountain Dulcimer

The D 7 chord is a dominant seventh — a major triad with a flat seventh that pulls strongly toward resolution. It is built from the notes D, F#, A, C. This page shows how to play D 7 on Mountain Dulcimer with clear fretboard diagrams and suggested finger positions.

The lowest shape sits at fret 5 and spans 4 frets, with no open strings in it. The root is the D string itself. It sounds from D4 up to C5.

Mountain Dulcimer is tuned D–A–D, with frets 1 to 17 laid out diatonically plus the 6+ and 13+ frets — D#, F and A# sound nowhere on it. Only the chords and notes its diatonic frets reach are charted, and the 6+ fret (between 6 and 7) counts as a fret of its own.

Browse alternate voicings to find the one that sits best under your fingers, then compare it with the other chord types built on D or explore the same shape in nearby keys. The diagrams list the notes in each voicing so you can connect the shape to the theory behind it.