Danny Gans had just finished his show Wednesday when his manager Chip Lightman sent a text message. "Apollo show. Are you OK. No curtain?" Something didn't feel right to Lightman. Looking back, "that was the scariest thing," Lightman said Friday, still in shock hours after the death of Gans at age 52. A creature of habit, Gans rarely ended with "The Curtain Falls," Bobby Darin's favorite closer. Through most of his thousands of shows as a 13-year Las Vegas headliner, Gans preferred ending with "Apollo," which featured snippets of songs by Sammy Davis Jr., Louis Armstrong, Ray Charles and others....