<Tr> <Th> US Billboard Hot 100 </Th> <Td> </Td> </Tr> <Tr> <Th> US Adult Contemporary (Billboard) </Th> <Td> </Td> </Tr> <Table> <Tr> <Th> Chart (1973) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Australia (Kent Music Report) </Th> <Td> </Td> </Tr> <Tr> <Th> Canada Top Singles (RPM) </Th> <Td> 8 </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> 9 </Td> </Tr> <Tr> <Th> US Cash Box Top 100 </Th> <Td> 7 </Td> </Tr> </Table> <Tr> <Th> Chart (1973) </Th> <Th> Position </Th> </Tr>

Who sang backup on carly simon's hit song you re so vain