After opening the Tribeca Film Festival in New York City last week, Nas made his way to the other coast to celebrate the 20th anniversary of Illmatic with a couple friends. 

Billboard says the rapper brought Lauryn Hill and Damian Marley onstage during his Coachella set Saturday night, which also included a full performance of his 1994 debut album exactly two decades after it came out.  

Nas wasn't the only one to invite guests to the festival in Indio, California.  Pharrell Williams enlisted T.I. to reprise their massive hit "Blurred Lines" and Usher joined him for a performance of the Pharrell-written "U Don't Have To Call." 

Jay Z -- who joined Nas last weekend at Coachella: Part One -- also showed up to share the stage with Pharrell for four songs. The two partnered up on "Frontin'," "Excuse Me Miss," "La La La" and "I Just Wanna Love U." 

Pusha T made a short cameo on "Grindin'" as well during weekend two.  The all-star guests follow Pharrell's set last weekend, which included appearances from Gwen Stefani, Snoop Dogg and Nelly.

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