The music of West Africa has a significant history, and its varied sounds reflect the wide range of influences from the area's regions and historical periods. Traditional West African music varies due to the regional separation of West Africa, yet it can be distinguished by two distinct categories: Islamic music and indigenous secular music. The widespread influence of Islam on culture in West Africa dates back to at least the 9th century, facilitated by the introduction of camels to trade routes between the North of Africa and Sub-Saharan West Africa. Islam-influenced West African music commonly includes the use of stringed instruments like the goje, while more secular traditional West African music incorporates greater use of drums such as the djembe.