<Tr> <Td_colspan="2"> <Table> <Tr> <Td> "Am I Losing You" (1972) </Td> <Td> "Breaking Up Is Hard to Do" (1972) </Td> <Td> "Looking Through the Eyes of Love" (1972) </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> "Am I Losing You" (1972) </Td> <Td> "Breaking Up Is Hard to Do" (1972) </Td> <Td> "Looking Through the Eyes of Love" (1972) </Td> </Tr> </Table> <Tr> <Td> "Am I Losing You" (1972) </Td> <Td> "Breaking Up Is Hard to Do" (1972) </Td> <Td> "Looking Through the Eyes of Love" (1972) </Td> </Tr> <Tr> <Td_colspan="2"> <P> </P> <Table> <Tr> <Td> "Am I Losing You" (1972) </Td> <Td> "Breaking Up Is Hard to Do" (1972) </Td> <Td> "Looking Through the Eyes of Love" (1972) </Td> </Tr> </Table> </Td> </Tr>

Who sang breaking up is hard to do