<Li> Charles Miller--clarinet, alto, tenor and baritone saxes, percussion, vocals </Li> <Li> Lee Oskar--harmonica, percussion, vocals </Li> <Table> <Tr> <Th> Year </Th> <Th> Album </Th> <Th_colspan="2"> Chart positions </Th> </Tr> <Tr> <Th> US </Th> <Th> US R&B </Th> </Tr> <Tr> <Td> 1972 </Td> <Td> The World Is a Ghetto </Td> <Td> </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Year </Th> <Th> Album </Th> <Th_colspan="2"> Chart positions </Th> </Tr>

Who wrote the song the world is a ghetto