Bruce Springsteen was a surprise guest at Coldplay’s show on Sunday night at MetLife Stadium in New Jersey. The Boss came out for two songs toward the end of their set, “Working On A Dream” and “Dancing In The Dark.” Chris Martin introduced him onstage by saying: “I have a tattoo on my arm which is because this person is my hero. I can’t believe we get to say it, but please welcome Mr. Bruce Springsteen.”