Jason Derulo always dreamed of doing a Las Vegas residency. The singer, who has sold over 250 million records, waited for the perfect moment. When he saw Le Voltaire at the Venetian Resort, he knew he had found the right venue. First, he and Michael Bublé filmed their latest single, “Spicy Margarita,” at the resort; then Derulo went on to craft his high-energy, interactive show. “You’ve never seen me in a performance like this before,” he says. “If a song feels cold, the room might just start snowing.” —Jeanne Malle