This is Bruno Mars in a state of nirvana … he is performing certainly one of Nirvana’s greatest hits … and it is all on video.

Take a look at this clip from Thursday’s non-public present on the Capitol Theatre in Port Chester, NY … Bruno is on stage with Slash, Duff McKagan, and Chad Smith once they begin enjoying Nirvana’s 1991 basic, “Smells Like Teen Spirit.”

Bruno’s into it, and so is Orlando Bloom … he is the cameraman right here who recorded the video and shared it on his Instagram story. Thanks, Orlando!

Eddie Vedder, Anthony Kiedis, Brandi Carlile, and Yungblud additionally hit the stage for the unique occasion — a present placed on by Eldridge Industries — they usually blended pop, punk, grunge, and basic rock in an epic jam sesh.