Christina Aguilera forgot the lyrics to the Star-Spangled Banner as she sung a version of the US national anthem to open Sunday’s Super Bowl in Texas.
Instead of singing: “O’er the ramparts we watched, were so gallantly streaming?” the singer repeated an earlier line with a slight variation.
Instead of the correct line, Aguilera actually sang: “What so proudly we watched at the twilight’s last gleaming.”
Whilst partaking in one of the set piece events of the famous pre-game ceremony Aguilera, 30, said in a statement she had got lost in the moment.
Social networks such as Twitter and Facebook lit up with comment as soon Aguilera’s mistake was made.
In a statement released after the performance, the singer said: “I can only hope that everyone could feel my love for this country and that the true spirit of its anthem still came through.”
The NFL final is one of the most-watched programmes in US television, last year alone, the programme commanded 10.5million viewers.
In 2004, the half-time show of Super Bowl created controversy when Justin Timberlake ripped a piece of Janet Jackson’s top, resulting in a glimpse of her right breast.
The pair said the incident was accidental, calling it a “wardrobe malfunction”, but broadcaster CBS TV was fined £351,000 after hundreds of complaints from viewers.