Tar is a plucked stringed instrument, also described as a long-necked lute, played in classical music of Iran (Persia), Caucasian countries like Azerbaijan and Armenia as well as Central Asian countries like Tajikistan and Uzbekistan. The tar mainly exists in two forms now, the Persian form - that is named "Tar e Shiraz" or "Tar e Irani" and the Caucasian form that is named "Tar e Ghafghaz".
The Persian tar is carved from a block of mulberry wood and has a deep, curved body with two bulges shaped like a figure 8. The upper surface is shaped like two hearts of different sizes, joined at the points. The sound box consists of two parts. The small part is called Naghareh and the large part is called Kasseh, which means bowl or sound box. The sound box is covered with lambskin. On the lower skin, a horn bridge supports six metal strings in three courses. The long fingerboard has twenty-two to twenty-eight movable gut frets. The strings are plucked with a brass plectrum, known as mezrab, coated on one side in wax. Its range is about two and a half octaves.