Jay Z and Beyonce — Surprise Bitches … We’re at Coachella!

The first couple of hip hop made their mark on Coachella Saturday … surprising two different audiences with unannounced appearances — and the hipsters went BONKERS!

First up, Beyonce … who danced her way onto the stage during little sister Solange‘s set.  But Queen Bey didn’t grace the Indio crowd with a release note.

Next, Jay Z … who rapped alongside his former nemesis Nas for a few minutes — then made his swift exit from the festival.

… and just like that, they were gone.