The first-ever iHeartRadio Country Festival was a smashing success on Saturday (March 29) in Austin, Texas, featuring star-studded performances, a surprise collaboration, and even a little bit of rapping (and this time, it wasn't Nelly!).

The sold-out event, breaking out of the iHeartRadio Music Festival in Las Vegas due to high demand, celebrated all things country, with a jam packed lineup of performers including Carrie Underwood, Jason Aldean, Eric Church, Luke Bryan, Florida Georgia Line, Lady Antebellum, Hunter Hayes, Jake Owen and Dan + Shay.

Some out of the ordinary things happened on the stage. Church opened the show with the title-track from his current album 'The Outsiders,' while Bryan closed out the evening with 'Country Girl (Shake It for Me).' What happened in between was pretty fantastic.

Owen added a hilarious addition to 'Barefoot Blue Jean Night,' and rapped the 'Fresh Prince of Bel-Air' theme during the song, much to fans' delight.

Duo FGL joined Aldean onstage for a collaboration of 'The Only Way I Know,' then the 'Night Train' singer smashed his guitar to pieces as he left the stage, celebrating a great show. Later, Bryan treated a Make-A-Wish child to a very sweet performance.

Hosted by nationally syndicated country music personality Bobby Bones, the iHeartRadio Country Festival included special guest presenters Lucy Hale, Danielle Bradbery and Cody Alan.

Rick Diamond, Getty Images
Rick Diamond, Getty Images
Rick Diamond, Getty Images
Bob Levey, Getty Images
Bob Levey, Getty Images
Rick Diamond, Getty Images
Rick Diamond, Getty Images
Bob Levey, Getty Images