Beyoncé and Bruno Mars surprised fans when they crashed the halftime show at Super Bowl 50. The NFL, in partnership with Pepsi, had already announced Coldplay as the main act, but the two artists made a guest appearance. The article does not provide details about their performance, but it is clear that their unexpected appearance added excitement to the already highly anticipated event. The halftime show is known for showcasing some of the world's biggest music stars, and this surprise addition did not disappoint.