After receiving a backlash over her national anthem performance at the NBA All-Star Game, singer Fergie has issued a formal apology. "I've always been honoured and proud to perform the National anthem and last night [Sunday] I wanted to try something special for the NBA. I'm a risk taker artistically, but clearly this rendition didn't strike the intended tone. I love this country and honestly tried my best," Fergie said in a statement.