The gig celebrating the 30th anniversary of Jay's Reasonable Doubt found JT popping out for the pair's duet on "Holy Grail" and his own "Until the End of Time."

NEW YORK, NY - DECEMBER 14: Jay-Z (L) and musician Justin Timberlake perform on stage at Barclays Center on December 14, 2014 in the Brooklyn borough of New York City.

Stephen Lovekin/Getty Images for M2M Construction

Surely you didn’t think Jay-Z was going to come empty-handed to his sold-out show at Stade de France in Paris on Thursday night (Sept. 10)? The latest show in the “Jay-Z30” run of gigs celebrating the 30th anniversary of the rapper’s Reasonable Doubt debut LP was cranked up several notches when Jigga was joined by his Magna Carta Holy Grail collaborator Justin Timberlake.

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