Kamancheh is a bowed string instrument that is made of wood, skin and metal. Its sound box is almost spherical shaped and hollow. The surface of the box is open and covered by skin and the bridge is placed on the skin. The skin on the surface is fine and from lamb fetus or goat. The neck of Kamancheh is a solid tube and made of wood. The neck is in the form of a reverse cone that means its diameter is narrower at the junction with the sound box. The neck has no fret. On the top of the neck there are head and tuning pegs, and on the top of the head there is another part that is called crown. Kamancheh has 4 metal strings in different thicknesses. There is a tendon at the bottom of the instrument which is used to make tuning easier and more accurate.
A thin and movable metal bar with a length of 10 centimeters is attached to the bottom of the sound box; it is used to place the instrument on the ground or on the player’s lap. The bow of Kamancheh consists of wood and horsetail hair. The bow hair is not stretched and tight, and when playing, it reaches the desired stretching by the fingers of the musician right hand.
Today, Kamancheh is made in various types that differ from old Kamanchehs in terms of size and number of strings. For example, we have alto kamancheh, bass kamancheh and 5-string kamancheh. Types of Glissando, Trill, Pizzicato and Tremolo techniques are applicable on this instrument. Kamancheh is played both in solo and in group. Among famous players of this instrument, we can refer to Masters Asghar Bahari and Kayhan Kalhor.