Gusli

The gusli or husla is the oldest East Slavic multi-string plucked instrument, belonging to the zither family, due to its strings being parallel to its resonance board. Its roots lie in Veliky Novgorod in the Novgorodian Republic. It has its relatives in Europe and throughout the world: kantele/kannel in Finland, kannel in Estonia, kanklės in Lithuania, kokles in Latvia, Zither in Germany, citera i... (Wikipedia)