<Tr> <Th> Theme music composer </Th> <Td> <Ul> <Li> Dave Grusin </Li> <Li> Alan Bergman </Li> <Li> Marilyn Bergman </Li> </Ul> </Td> </Tr> <Ul> <Li> Dave Grusin </Li> <Li> Alan Bergman </Li> <Li> Marilyn Bergman </Li> </Ul> <Tr> <Th> Opening theme </Th> <Td> "Good Times" performed by Jim Gilstrap and Blinky Williams </Td> </Tr> <Tr> <Th> Composer (s) </Th> <Td> Dave Grusin Alan and Marilyn Bergman </Td> </Tr>

Who sings the theme song to good times