Autoharp

I think it s name should be autogusli but in english language most of instruments have "harp" or "organ" in their names ^_^_^"

Some information from Wikipedia:

The autoharp is a musical string instrument having a series of chord bars attached to dampers, which, when depressed, mute all the strings other than those that form the desired chord. Despite its name, the autoharp is not a harp at all, but a chorded zither.

There is debate over the origin of the auto-harp. A German immigrant in Philadelphia by the name of Charles F. Zimmermann was awarded US 257808 in 1882 for a design for a musical instrument that included mechanisms for muting certain strings during play. He named his invention the "autoharp". Unlike later autoharps, the shape of the instrument was symmetrical, and the felt-bearing bars moved horizontally against the strings instead of vertically. It is not known if Zimmermann ever commercially produced any instruments of this early design. Karl August Gütter of Markneukirchen, Germany, built a model that he called a "Volkszither," which most resembles the autoharp played today. Gütter obtained a British patent for his instrument circa 1883–1884. Zimmermann, after returning from a visit to Germany, began production of the Gütter design in 1885 but with his own design patent number and catchy name. Gütter's instrument design became very popular, and Zimmermann has often been mistaken as the inventor.

Modern autoharps have 36 or 37 strings, although some examples with as many as 47 strings, and even a rare 48-string model exists. They are strung in either diatonic (1, 2 or 3 key models) or chromatic scales. Standard models have 15 or 21 chord bars, or buttons, available, a selection of major, minor, and dominant seventh chords.

Although the autoharp is often thought of as a rhythm instrument for playing chordal accompaniment, modern players can play melodies on the instrument. Diatonic players are able to play fiddle tunes by using open-chording techniques, "pumping" the damper buttons while picking individual strings. Skilled chromatic players can perform a range of melodies.

How it looks:


Example of playing: