"Historically various people (Lithuanians, Latvians, Livonians, Estonians, Finns, northwest Russians) have played related box-zither type instruments (the so called Baltic psaltery) in the south east vicinity of the Baltic Sea for centuries. In the United States prominent plucked box zithers include the hammered dulcimer and the autoharp," - (en.wikipedia.org 07.10.2019)
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