AJR opened our 'I’m Ready For A Crazy Stupid Killer Summer Kickoff' party, and they rocked it out pretty hardcore.

They played four songs, including their hit single 'I'm Ready' and the crowd was singing along and having a great time.

Here's a couple of their songs in case you missed the show.

BONUS! Here they are with a cover of the song "Wagon Wheel."

Also on the stage under the Texas St bridge in the Red River District, My Crazy Girlfriend and The Ready Set.