About BanjoThe banjo is a four-, five-, or six-stringed instrument with a thin membrane stretched over a frame or cavity as a resonator, called the head, which is typically circular. The membrane is typically made of plastic, although animal skin is still occasionally used. Early forms of the instrument were fashioned by Africans in the United States, adapted from African instruments of similar design. The banjo is frequently associated with folk, Irish traditional, and country music. Banjo can also be used in some rock songs.