A confident 4-year-old who belts out Frank Sinatra songs, a charming 9-year-old bubble artist from Germany, a 7-year-old math expert, and a 5-year-old presidential expert who recites John F. Kennedy’s Inaugural Address. Also wowing viewers will be a 10-year-old contortionist, and a 12-year-old gospel singer who’s voice will leave viewers singing his praises.