The document discusses traditional musical instruments of Africa. It describes various percussion instruments like balafons, rattles, and slit drums that are struck or shaken. It also covers membranophones like drums that have animal skins, as well as idiophones like mbiras. String instruments discussed include musical bows, lutes, koras, and zithers. The document also outlines aerophones such as flutes, panpipes, horns, and reed pipes that produce sound by vibrating air inside them.