<Ul> <Li> Negro league baseball </Li> </Ul> <Li> Negro league baseball </Li> <Tr> <Th> Athletic associations and conferences </Th> </Tr> <Tr> <Td> <Ul> <Li> Central (CIAA) </Li> <Li> Southern (SIAC) </Li> <Li> Mid-Eastern (MEAC) </Li> <Li> Southwestern (SWAC) </Li> </Ul> </Td> </Tr>

What do you already know about the music genre called the blues