<Tr> <Th_colspan="2"> Gladys Knight & the Pips singles chronology </Th> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> "I've Got to Use My Imagination" (1973) </Td> <Td> "Best Thing That Ever Happened To Me" (1974) </Td> <Td> "On and On" (1974) </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> "I've Got to Use My Imagination" (1973) </Td> <Td> "Best Thing That Ever Happened To Me" (1974) </Td> <Td> "On and On" (1974) </Td> </Tr> </Table> <Tr> <Td> "I've Got to Use My Imagination" (1973) </Td> <Td> "Best Thing That Ever Happened To Me" (1974) </Td> <Td> "On and On" (1974) </Td> </Tr>

Who sang the best thing that ever happened to me