Kobyz (kaz. 'qobyz', 'qyl-qobyz') - is an ancient Kazakh bow two-stringed musical instrument and an essential attribute of rites conducted voodoo ('baqsy', 'qam') - a shaman. Kobyz belongs to the class of chordophones. It is manufactured by the special manufacturing technology from a single piece of wood - juniper (arsha, archa), maple, pine or birch. Kobyz id subdivided into three functional parts: 'bas' - a head, upper part, middle part; 'Keude' (base) - a middle part - is made in the form of an open cup, extended downward. Inside the cup is attached mirror. The bottom part - ayak (legs) part of the tool is tightened with camel skin ('deka'). The support (tiek) is based on the bottom part. Sounds of kobyz, removed by rubbing with a bow-string. The bow has an arcade shape and resembles a bow weapon: the bun of horsehair is tied to both ends of the bent branch and fixed by the strong thread of camel wool. Strings for kobyz are made of a bundle of 30-60 non-woven horsehair ('qyl'), which give a very dense timbre rich in overtones. General instrument construction and its decoration detail were combined into an integral system that reflected the inner world and the philosophy of the Kazakhs. The tradition of making kobyz and playing of kobyz music was very specific for traditional environment and professional communities.