Jay Z helped Nas celebrate the 20th anniversary of his classic Illmatic album by joining the US rapper on stage at the Coachella music festival.
Nas marked the milestone by playing the 1994 release in its entirety, before inviting Jay Z to join him in the spotlight for a rendition of Dead Presidents II.
Jay Z, who was engaged in a lyrical feud with Nas back in 2001, also treated the audience to a performance of Where I'm From.
But he wasn't the only special guest - Sean 'Diddy' Combs later appeared onstage to join Nas for his 1999 single Hate Me Now, hours after the rapper/producer teamed up with Pharrell Williams, for Pass The Courvoisier Pt. II with Busta Rhymes.
Paying tribute to Nas during the late set, Combs said, "Nas, you have to understand. If it wasn't for you, hip-hop wouldn't be where it is today."
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Meanwhile, Jay Z's wife, Beyonce, also made an unannounced appearance on Saturday alongside her sister Solange Knowles at the end of the singer's track Losing You, where they performed a brief choreographed dance routine together.
The 2014 Coachella line-up has already seen performances from Outkast, Muse, Haim, Queens of the Stone Age, Lorde, Pharrell Williams and the Pet Shop Boys, while Arcade Fire, Motorhead, Lana Del Rey and Calvin Harris were among the acts on Sunday's bill.
