Jay-Z & Kanye West: New Year's Eve Performance!

Jay-Z and Kanye West perform together on stage at Marquee Nightclub’s New Year’s Eve bash on Friday (December 31) at the Cosmopolitan Hotel in Las Vegas, Nevada.

During the show, Jay, Kanye and Coldplay frontman Chris Martin performed “Homecoming,” Beyonce joined Jay for “Forever Young,” and Chris accompanied Bey on keys while she sang “Halo.” Epic!

Also celebrating at the show: Blake Lively, Diddy, Cassie, Samantha Ronson, Kings of Leon bassist Jared Followill, Olivia Munn, and Forest Whitaker.

Watch below as Jay-Z and Beyonce sing “Forever Young”…