Watch Christina Aguilera’s National Anthem rehearsal for the Super Bowl in this TMZ video clip, where Aguilera does a much better job with the performance and gets the Star Spangled Banner lyrics right!

One thing though, why doesn’t Aguilera sing the whole National Anthem during the rehearsal? Was Aguilera so confident that she had it all perfect? Seems she could have used some extra practice, given Aguilera’s botched Super Bowl performance.