The cylindrical kyondo (slit drum or gong) in the form of a female from Luba in the Republic of Congo is carved from wood. The slit drum is an idiophone drum, made from a hollowed piece of wood in which a narrow groove serves as a sound opening. These rare and important figures are used in divination rituals, when their bowl shaped cavities are filled with magic materials. Slit drums of wood are not used by tribes in south-west Congo as musical instruments for entertainment and dancing, but instead exclusively for rythmic accompaniment during sacred rites (initiation, burial, healing the sick, etc.). The slit drum is struck with a stick along both sides of the narrow groove, which produces two different pitches. The possibility of combining rhythm with pitch enables the slit drum to act as a means of communication for tone language of the tribes.