"Two thirds rhythm and one third soul." That's how Fats Waller defined the uniquely American form of popular music and dance known as "swing." Requiring only joyful enthusiam and a ready partner, swing exploded out of pre-war Harlem's hotbed of youth culture and swept the world. SWING! Celebrates this remarkable diversity to the beat of the most exhilerating songs of the period. But as this enthralling song-and-dance show makes abundantly clear, swing was never a time or place -- it has always been a state of mind!