Cross-strung harp

Cross-strung chromatic harp (Pleyel, Wolff, Lyon & Cie, early 20th century)

The cross-strung harp or chromatic double harp is a multi-course harp that has two rows of strings which intersect without touching. While accidentals are played on the pedal harp via the pedals and on the lever harp with levers, the cross-strung harp features two rows so that each of the twelve semitones of the chromatic scale has its own string.