A Setar (Persian: سهتار) is a stringed instrument, a type of lute used in Persian traditional music, played solo or accompanying voice. It is a member of the tanbur family of long-necked lutes with a range of more than two and a half octaves. Originally a three stringed instrument, a fourth string was added by the mid 19th century. It is played with the index finger of the right hand.
Although related to the tanbur, in recent centuries, the setar has evolved so that, musically, it more closely resembles the tar, both in tuning and playing style. The instrument is most commonly tuned c c’ g c’ .