<Tr> <Th> Producer (s) </Th> <Td> <Ul> <Li> Mike Clink </Li> <Li> Guns N' Roses </Li> </Ul> </Td> </Tr> <Ul> <Li> Mike Clink </Li> <Li> Guns N' Roses </Li> </Ul> <Li> Guns N' Roses </Li> <Tr> <Th_colspan="2"> Guns N' Roses singles chronology </Th> </Tr>

Who sang the song knock knock knocking on heaven's door