Eighty-five-year-old Marian Steele's feet beat is racing. As her tap-clad shoe soles rebound snappily off the stage floor, they resound like intoxicating drumbeats. It's a joyful noise, a rap of the ...

“One, two, three, four,” counts Abbie Rock as she slowly scuffs her shiny black shoes against a bright wooden floor. After receiving kudos from her instructor, the 6-year-old — wearing pink tights, a ...