{"gt_parse": {"text_sequence": "other. Shifting down three courses tra nsposes the D-major scale to A-major, but of course the first Do-Re-Mi would be shifted off the i nstrument.This t uning results in most but not all notes of th e chromatic scale being ava ilable. To fill in the gaps m any modern dulcimer build ers include extra short brid ges at the top and botto m of the soundboard where extra strings are tuned to some or all of the missing pitches. Such ins truments are often call ed . The tet ra ch ord m ark ers f"}}