Christina Aguilera- National Anthem at Super Bowl

Christina Aguilera performed the National Anthem live at the Super Bowl in Dallas, Texas tonight... and although she is a great vocalist, this performance was all wrong. Not only did she mess up the lyrics, but the last note was rough. I'm sure there's a difference between hitting a high note and plain out screaming. Props to her for singing live, but Carrie Underwood did miles better last year.