Aries ram horn: The tar bridge, saddle, and nut are made of ram horn. The reason is the more acceptable sound that the ancient composers and musicians had achieved. After cutting the ram horn laterally, it is cut to a size of 6 cm, and each of the pieces is used in proportion to the thickness of the horn to make the tar bridge, saddle, and nut. Skin of ewe lamb during pregnancy: Skin of the pregnant ewe lambs that are unknowingly slaughtered is tanned. One should be careful in doing so, since this skin is so thin that it is torn with a little carelessness.
Tar frets: For frets on the tar, setar, and dotar necks, the tanned intestines of lambs (cord twisted) are used in such a way that the intestines of sheep are cleaned and degreased in the cord-twisting workshop to form thin threads. They are tied in two or three strings according to the required orders.