Super Bowl Halftime Repeat Performers: Who Performed More Than Once? – Billboard
Super Bowl Halftime Shows Over the Years, Photos – WWD
Top 8 most-watched Super Bowl halftime shows since 2011 - What's Up Newp
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Super Bowl XLV, Christina Aguilera, Black Eyed Peas and the Swagger Buzz, News, Scores, Highlights, Stats, and Rumors
Best Super Bowl Halftime Show outfits ever, London Evening Standard
Super Bowl Halftime Performers Through The Years – Photo Gallery – Deadline
Photos: Past Super Bowl halftime performances since 1998
Photos: Past 20 Super Bowl halftime performances