<Tr> <Td_colspan="2"> <Ul> <Li> Classical </Li> <Li> Jazz </Li> <Li> Country </Li> <Li> Folk </Li> <Li> Bluegrass </Li> <Li> Hip hop </Li> <Li> Pop </Li> <Li> Rock </Li> <Li> R&B </Li> </Ul> </Td> </Tr> <Ul> <Li> Classical </Li> <Li> Jazz </Li> <Li> Country </Li> <Li> Folk </Li> <Li> Bluegrass </Li> <Li> Hip hop </Li> <Li> Pop </Li> <Li> Rock </Li> <Li> R&B </Li> </Ul> <Tr> <Th_colspan="2"> Specific forms </Th> </Tr> <Tr> <Th> Religious music </Th> <Td> <Ul> <Li> Gospel music </Li> <Li> Christian pop </Li> </Ul> </Td> </Tr>

Which technology has exerted a strong influence on american popular music