The kanoun, which is the sine qua non of Turkish classical music, is a member of the stringed instruments family with an impressive and powerful voice. It has a slightly different structure compared to other stringed instruments. The instrument, which is said to have been invented by Farabi, was also used by the Sumerians and Egypt in ancient times. Consisting of 4 or 27 frets, there are 3 strings in each fret of the qanun, and these strings are usually made of nylon. While the kanoun is mostly produced from trees such as sycamore and linden, it can also be made from thick plywood today.