Melbourne: Pop star Christina Aguilera botched up the US national anthem at the start of the Super Bowl.
She was supposed to sing the line "O`er the ramparts we watched, were so gallantly streaming?" but instead ended up repeating an earlier line, with a slight variation.
She sang, "What so proudly we watched at the twilight`s last gleaming", which is the same line from earlier in the song but with the word `watched` instead of the word `hailed`, reports News.com.au.
The error caught the attention of people immediately and set social networks abuzz with many users commenting on the error.
Aguilera`s representative did not immediately return a call and email seeking comment.