The ancestry of the setar can be traced to the ancient tanbur of pre-Islamic Persia. It is made from Active Imagethin mulberry wood and its fingerboard has twenty-five or twenty-six adjustable gut frets. Setar is literally translated as ``three strings''; however, in its present form, it has four strings and it is suspected that setar initially had only three strings. Because of its delicacy and intimate sonority, the setar is the preferred instrument of Sufi mystics.
Two of the strings are made of steel, two are of brass, and they are tuned to c, c semi-sharp, g, and c semi-sharp, respectively. The average setar is 85 cm long, 20 cm wide, and has a 15 cm deep gourd, and is made entirely of wood. (Unlike the tar which has a membrane streched across the body.) Also, unlike the tar, the player plucks the strings with the nail of the index finger, instead of using a plectrum. It is believed that setar is the ancestor of the Indian sitar.