One of the most typical East African instruments, called "tanbūra" or "kissar" in Nubian music, was traditionally played by the singers as the usual accompaniment for such songs, but this traditional Sudanese lyre has largely been replaced in the 20th century by the Arabic oud. Drums, hand clapping and dancing are other important elements of traditional musical performances, as well as the use of other African instruments, like traditional xylophones, flutes or trumpets. One example for this are the elaborate wooden gourd trumpets, called al Waza, played by the Berta people of the Blue Nile state.