<Li> Southern (SIAC) </Li> <Li> Mid-Eastern (MEAC) </Li> <Li> Southwestern (SWAC) </Li> <Tr> <Td> Ethnic subdivisions (show) <Ul> <Li> Americo - Liberians </Li> <Li> Black Indians </Li> <Li> Black Southerners </Li> <Li> Gullah </Li> <Li> Igbo </Li> </Ul> </Td> </Tr>

Early blues musicians used which combination of instruments