Africans have developed systems of classification of songs. the bahutu of ruanda (burundi) have at least twenty-four different types of there are songs played by professional musicians for entertainment, songs for harvesting and other work songs, war songs, beer drinking songs, songs commemorating the birth of children, songs admonishing erring members of the society, songs deriding europeans, vulgar songs, etc. social songs are separated from ceremonial or religious song.