<Tr> <Td_colspan="2"> <Ul> <Li> Alternative country </Li> <Li> country rock </Li> <Li> psychobilly </Li> <Li> rockabilly </Li> <Li> gothabilly </Li> <Li> cowpunk </Li> <Li> country rap </Li> <Li> country pop </Li> <Li> sertanejo </Li> <Li> Southern soul </Li> <Li> Tejano </Li> </Ul> </Td> </Tr> <Ul> <Li> Alternative country </Li> <Li> country rock </Li> <Li> psychobilly </Li> <Li> rockabilly </Li> <Li> gothabilly </Li> <Li> cowpunk </Li> <Li> country rap </Li> <Li> country pop </Li> <Li> sertanejo </Li> <Li> Southern soul </Li> <Li> Tejano </Li> </Ul> <Tr> <Th_colspan="2"> Other topics </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Country musicians </Li> <Li> list of years in country music </Li> </Ul> </Td> </Tr>

Country swing music developed in the 1920s and 1930s in what area of the united states