The setâr is an Iranian musical instrument whose name means "three strings" in Persian. It is a member of the family of long-necked lutes. It originated in Persia at the time of the expansion of Islam. It is a direct descendant of tambûr1 old about 3000 years, and a direct relative of the Indian sitar. It is a variant in Azerbaijan,  Tajikistan and India in Kashmir. The setâr consists of a box rounded resonance composed of thin strips of wood (beech or mulberry) glued-laminated. The beech soundboard is very thin and pierced with tiny openings. The neck, long and thin, is fruit or walnut and  boxwood four pegs. The instrument has 25-27 frets not regularly arranged to unsuspecting eyes, to play quarter tones. There are two and a half centuries , A fourth string was added, often given to higher octave of the bass string to give more scope there.  It is generally agreed as follows: C3 - Sol2 - C3 - Do2. The registry setâr is two and a half octaves . Despite its small size , it is quite sound .