The Grammy winner, 30, botched the lyrics, mistakenly singing "what so proudly we watched, at the twilight's last reaming" instead of "o'er the ramparts we watched, were so gallantly streaming." The flub immediately caught the attention of viewers across the country and was a big topic on Twitter throughout the game.
"I can only hope that everyone could feel my love for this country and that the true spirit of its anthem still came through," Aguilera said in a statement to The Associated Press.
Super Bowl halftime show headliners The Black Eyed Peas struggled to maintain quality vocals throughout their performance, but won over the crowd and at-home viewers with their impressive visuals, including hundreds of LED-lit dancers. Bookended with their 2009 staple "I Got a Feeling," the show featured the group's hits, from last year's "Time of My Life" to 2003's "Where Is the Love." The Peas also shared the stage with two surprise guests, Axl Rose guitarist Slash, who accompanied Fergie on a cover of Guns N' Roses' "Sweet Child O' Mine," and Usher, who performed his hit "OMG" with frequent collaborator and Peas member Will.I.Am.
Watch Aguilera's performance here: