Everyone knows and loves the Motown sound, the great horns of Stax Records and the sound of sweet soul music before it became disco-fied. In the summer of 1999, D A Pennebaker and Chris Hegedus launched a mission to find and record the great soul stars who never stopped working: Wilson Pickett, Sam Moore (of Sam and Dave), Mary Wilson (of the Supremes), Isaac Hayes, Jerry Butler and the Chi Lites. They went to Memphis for a reunion of legendary Stax Records stars like Rufus Thomas and his daughter, the great Carla Thomas, William Bell, Sir Mack Rice and others. The result is a permanent film document of a dying genre of music—rhythm and blues—some 25 years after the hits stopped coming but the musicians kept playing. What happened when disco took over and the radio became fractionalized? How did they keep going? Indeed, as Jerry Butler sings in the film, “Only the strong survive.”