The krez (or krez', krezh) is a musical instrument of the Udmurt people of the Russian Urals. It is a type of zither similar to the Russian gusli. The mythical origin of the krez is detailed in the Udmurt national epic, the Dokjavyl. The krez was used to accompany some shamanic ritual dances, and the large krez (bajym krezh) was used for music during the holiday of Bulda.
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Krez (instrument) Wikipedia(Text) CC BY-SA