Music is found in every known society, past and present, and is considered to be a cultural universal. Since all people of the world, including the most isolated tribal groups, have a form of music, it may be concluded that music is likely to have been present in the ancestral population prior to the dispersal of humans around the world. Consequently, the first music may have been invented in Africa and then evolved to become a fundamental constituent of human life, using various different materials to make various instruments.