Kiko, Leandro and Bruno Finato Scornavacca formed the pop group KLB in 2000, and rocketed to stardom in their native Brazil with their first single. A strong musical heritage surely played its part in their success—their father was a rock musician and later a successful manager. But it’s the good vibes that their tight family bond inspires—and the sincerity of their charming love songs, stirring power ballads and intimate seductions—that explains how they’ve captured so many hearts.