Swing! features world-class Swing dancers, a Swing band and acclaimed vocalists Laura Benanti, Everett Bradley, Casey MacGill and jazz/cabaret star Ann Hampton Callaway in her Broadway debut. The 30 dance numbers represent the many forms of swing that are popular around the world including neo-Swing dances, country western, Latin and traditional Swing dancing. Swing! opened Dec. 9 at the St. James Theatre.