It's the biggest combination of sports and music in the world - the Super Bowl halftime show.
Down the years, legends like The Rolling Stones and The Who have kept Americans entertained in between the two halves of the country's biggest sporting event, so you know it's a big honour to be asked to play.
Every year, almost as much speculation goes into figuring out who will play at halftime as goes into who will actually be playing in the game itself, so there's a lot of pressure on the NFL to find a big name who will make everyone happy.
This season, they've gone for British band Coldplay - and plenty of fans aren't happy...
https://twitter.com/daniecal/status/672518254787624960
https://twitter.com/Toucherandrich/status/672517648836521984
https://twitter.com/BeTheBoy/status/672520799002038273
https://twitter.com/bheater/status/672520574229454849
But there are still plenty willing to stick up for Chris Martin and co...
https://twitter.com/TheDanstein/status/672518519230177280
https://twitter.com/JMad2k/status/672518426095693824
https://twitter.com/AlanaMassey/status/672518104384184320
https://twitter.com/GraceSpelman/status/672517597297025024
Then there were those who didn't seem care all that much...
https://twitter.com/jon_bois/status/672513598674100225
