<Tr> <Th> Released </Th> <Td> <Ul> <Li> November 1977 (Saturday Night Fever soundtrack) </Li> <Li> 23 January 1978 (single) </Li> </Ul> </Td> </Tr> <Ul> <Li> November 1977 (Saturday Night Fever soundtrack) </Li> <Li> 23 January 1978 (single) </Li> </Ul> <Li> November 1977 (Saturday Night Fever soundtrack) </Li> <Li> 23 January 1978 (single) </Li>

Who sings the song if i can't have you