Springsteen joined Zach Bryan to perform The Boss’s classic “Atlantic City” during Bryan’s tour stop at MetLife Stadium in East Rutherford. Caleb Followill, from opening band Kings of Leon, also joined in the fun. Bryan, 29, ignited the crowd when he introduced his special guests.

The Boss performed with the artist who has become known as his “heir.” Bruce Springsteen surprised the audience at Zach Bryan’s concert Sunday night at MetLife Stadium in Ea

Callow Followill is back onstage following a "freak accident" that broke his foot in May. He performed with Zach Bryan and Bruce Springsteen, singing the latter's "Atlantic City" on Sunday, July at MetLife Stadium in New Jersey.