NEW YORK (Reuters) - Rapper Big Boi is trying new sounds and styles for his highly anticipated second album out on Tuesday, carving a successful solo spotlight beyond OutKast's devoted following. Big Boi, whose real name is Antwan Andre Patton, is best-known as one-half of hip-hop duo OutKast with Andre 3000. The group, which went on indefinite hiatus in 2007, scored hits including "Ms. Jackson" in 2001 and "Hey Ya" two years later. ...