Jad’ an-Nar (or HAUKI), is a ritual cult practiced by members of the Berta tribe in the south of the Blue Nile, and is associated with the seasons of cultivation and harvest.
the music and instruments, which consist of a group of flutes of different sizes and lengths of precisely calculated dimensions. Each of the fourteen plus instruments produces its distinctive sound. The device is made from a specific type of gourd, cultivated near houses to grow rectangular.