Steven Tyler performs the national anthem at the AFC Championship game in Foxborough, Mass., in January.
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National anthem: Controversial deliveries

Steven Tyler performs the national anthem at the AFC Championship game in Foxborough, Mass., in January.

Steven Tyler performs the national anthem at the AFC Championship game in Foxborough, Mass., in January. (Matt Campbell / EPA)

Despite having plenty of experience singing it at sporting events, Christina Aguilera flubbed the lines at the Super Bowl in 2011. She appeared to lose her place in the lyrics and to create her own variations such as, "What so proudly we watched at the twilight's last reaming." She later released a statement explaining that she'd gotten so caught up in the performance that she'd gotten lost.

Despite having plenty of experience singing it at sporting events, Christina Aguilera flubbed the lines at the Super Bowl in 2011. She appeared to lose her place in the lyrics and to create her own variations such as, “What so proudly we watched at the twilight’s last reaming.” She later released a statement explaining that she’d gotten so caught up in the performance that she’d gotten lost. (Jamie Squire / Getty Images)

Singing at the U.S. Open tennis tournament in New York on Sept. 11, 2011, Cyndi Lauper declared our flag to be still streaming, or something like that. Afterward, in a pair of messages on Twitter, Lauper said: Whew, I just did the anthem for the US open. It was an awesome experience.I got choked up in the middle remembering 9/11. The moon shone done on us and I tried to say a prayer at the same time.. I hope I didn't mess up too bad. I wanted it to be comforting. Xcyn Story

Singing at the U.S. Open tennis tournament in New York on Sept. 11, 2011, Cyndi Lauper declared our flag to be still streaming, or something like that. Afterward, in a pair of messages on Twitter, Lauper said:

Whew, I just did the anthem for the US open. It was an awesome experience.I got choked up in the middle remembering 9/11.

The moon shone done on us and I tried to say a prayer at the same time.. I hope I didn’t mess up too bad. I wanted it to be comforting. Xcyn

Story (Michael Heiman / Getty Images)

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