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Bruno Mars is sharing the spotlight for a good cause.  Fan footage of last  weekend's Make It Right Gala in New Orleans is surfacing online, showing the event's host -- actor Brad Pitt -- joining the pop star for a jam session. 

Videos show Bruno inviting Brad onto the stage as his band starts playing the beginning of James Brown's "Sex Machine." 

Before going into his cover of the song, Bruno jokingly dedicates it to the actor, who is also handed a tambourine.  Brad is shown getting in line with the rest of the band just behind the singer and shaking his instrument. 

Bruno was on hand to help raise money for Brad's charity, which he started in 2007 after Hurricane Katrina to rebuild New Orleans. 

Photo Credit Splash News