Balafon-(bala, balaphone), a Manding name, is believed to have developed independent of the South African marimba. It is made up of wooden rods usually played with padded sticks/mallets. Pitch of the notes vary according to such factors as density and weight of the wood, as well as the length, width, and thickness of the wooden rods. Under each rod is a calabash of varying size, which serves as a resonator. The design of the instrument has not changed much over the centuries, however variation exists throughout West Africa, such as the Balangi in Sierra Leone, the Gyil, (pronounced JEE-lee) of the Dahara people from Ghana, Burkina Faso, and Côte d'Ivoire, and the palaku of the ancient Central African Kingdom of Kongo,. Alternately these instruments can be mounted on a frame or stand and played sitting, standing, or attached to a long leather strap to be slung around the neck and played in processionals.