The sacred drum of the Senzi belonged to their departed ancestors at the time when they were living in the north.Among all their musical instruments, the greatest, and that which was feared and revered most by all the people, was this instrument of the royal ancestor spirits, the Drum of Mwali, the ancestor god of the Senzi and the Kalanga.
This drum was called the Voice of the great God, Mambo wa Denga (King of Heaven), the lord of all the ancestor spirits.