Bar zither

Bar zither is class of musical instruments within the Hornbostel-Sachs classification system for a type of simple chordophone, in which the body of the instrument is shaped like a bar.
In the system, bar zithers are made up of musical bows and stick zithers. Musical bows have flexible ends, stick zithers are rigid or have only one flexed end. Bar zithers, whether musical bow or stick zithers, often have some form of resonator. Examples of resonators include the player's mouth, an attached gourd or an inflated balloon or bladder.
According to Sachs,
Instruments may be monochords or polychord. They may also be idiochords or heterchords (string made of separate substance from the bar or stick.