Can blue men sing the whites? Can Fred Astaire tap dance? Well - yes; but the top-hat-and-tails routine, like the Clapton solo, sho' nuff got black roots. This lively showcase for veteran Harlem hoofers delightedly lets them show. A spirited tap 'contest' in front of the Lionel Hampton Band and an enthusiastic audience caps a unique retrospective portrait of the art, featuring amazing clips from both mainstream and 'race' movies of the '30s heyday, and fixing tap as another enduring expression of black American culture.