Beyonce, Jay Z: Bring On Hillary Clinton with an Air Horn!!!

Beyonce and Jay Z were all about Hillary Clinton Friday night, as they introduced her to a huge crowd ... and the air horn is hilarious!

The concert was held in Cleveland to get out the vote, and Bey and Jay made impassioned pitches for the Prez nominee.

Hillary then took the stage for a photo op with the most powerful people in music, then addressed the crowd and talked glass ceiling.