Zither

                                 

The Zither or Kanoon instrument played in much of the Middle East Central Asia , and southeastern Europe . The name derives from the Arabic word kanoon which means rules , norm , principle " itself from Ancient Greek  rule . It is a type of music is based on magmas . It is used in turkey have 26 courses of strings , with three strings per course . It is played on the lab by plucking the strings with two tortoise shell picks on each hand , or by the fingernails , and has arange of three and half octaves , from A2 to E6 . The dimensions of Turkish kanoon are typically 95 cm to 100 cm . The instrument also has special latches for each course called mandals . These small levers , which can be raised or lowered quickly by the performer while the instrument is being played , serve to change the pitch of a particular course slightly by altering the string length .