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Fergie, who also performed with her band Black Eyed Peas and Slash during halftime of the Pittsburgh Steelers and Green Bay Packers championship game, defended Christina by saying that such mistake could happen at such high-profile concerts due to lots of pressure. She added that she is one of the best singers but could get nervous as she is a human too.
Christina had earlier offered her apology for the mistake. “I got so caught up in the moment of the song that I lost my place. I can only hope that everyone could feel my love for this country and that the true spirit of its anthem still came through," Contactmusic quoted the singer as saying.