Nas wants to collaborate with rock legends Billy Joel and Bruce Springsteen. Here are 10 times rap and rock have crossed over before.

Jay-Z and Linkin Park's 2004 joint album "Collision Course" is the mother of all rap-rock collaborations.

Featuring unique mash-ups of both artists' biggest hits, including "Big Pimpin'/Papercut," "Points of Authority/99 Problems/One Step Closer," and, most famously, "Numb/Encore," the album has sold over 2 million copies in the United States alone.

Collaborating with rockers is nothing new to Nas. In 2003, he provided a guest verse on Korn's "Play Me" from the band's sixth studio album, "Take A Look In The Mirror."

"I called [Nas] up and asked him if he wanted to be on the album," Korn lead singer Jonathan Davis told MTV of the link-up later that year. "He said he was a fan of Korn and he'd love to do it."

"It's very heavy, it's not anything to do with hip-hop at all," Davis added. "And he's such a great lyricist that he has something to say. He's really deep, and it comes across well."

Limp Bizkit frontman Fred Durst showed that he's capable of trading verses with the big boys as he linked up with Wu-Tang Clan rapper Method Man for the 1999 single "N 2 Gether Now."

Producer DJ Premier said last year during an episode of his YouTube series "So Wassup?" that he originally declined Durst's invitation to produce the track, but after meeting him in person and finding out Durst owned a number of his mixtapes, he decided to accept.

Though Trick Daddy and Ozzy Osbourne didn't directly work together on the former's 2004 single with Lil Jon and Twista "Let's Go," the track sampled Osbourne's debut solo single "Crazy Train."

Speaking with HipHopDX last year, Trick said that not only did he have Osbourne's blessing to sample his work, but that the metal legend only charged him "pennies" to do so.

Released in 2000, "Loud Rocks" is an album of unique collaborations between various heavy rock and hip-hop artists, including System of a Down and Wu-Tang Clan ("Shame"), Everlast and Mobb Deep ("Shook Ones Part II"), and Static-X and Dead Prez ("Hip-Hop").

The pick of the bunch is the album's final collab, which sees California rockers Incubus link up with Big Pun for a remix of the latter's "Still Not a Player."

The collaboration between hip-hop duo Run the Jewels and Rage Against the Machine frontman Zack de la Rocha on 2014 single "Close Your Eyes (And Count to Fuck)" wasn't a planned one.

"When I was in L.A. working on the record I bumped into him literally on the way to the studio," E-LP, one half of Run the Jewels, revealed after the record's release. "He came by and listened to what we had and a day later was recording with us."

You'll have probably heard the remix of Diddy's "It's All About the Benjamins" featuring The Notorious B.I.G. and Lil Kim, which made it to No. 2 on the Billboard Hot 100 in 1997.

What you probably haven't heard is the rap-rock remix of the track featuring horror movie and heavy metal legend Rob Zombie and Foo Fighters frontman Dave Grohl. It even had its own music video, directed by Spike Jonze, which was nominated for best video of the year at the 1998 MTV Video Music Awards.

Public Enemy gave a shout-out to thrash metal band Anthrax on their 1988 single "Bring the Noise" after Chuck D saw guitarist Scott Ian wearing a Public Enemy shirt in a magazine photoshoot.

In 1991, Anthrax then released a version of the song featuring the original vocals, creating what is widely regarded as the first ever major rap-rock collaboration.

"It was the first time that a metal artist dared to cover a rap record," Chuck D told Louder Sound in 2020. "They 'Anthrax-ised' it, bringing it into the metal world. It was a total discovery."

Two years after Public Enemy and Anthrax introduced the world to the concept of rap-rock came the release of the album "Judgment Night" — the soundtrack to the 1993 film of the same name.

All 11 of the album's songs were collaborations between hip-hop and rock artists, including Biohazard and Onyx ("Judement Night"), Teenage Fanclub and De La Soul ("Fallin'"), and House of Pain and Helmet ("Just Another Victim").

Before Linkin Park joined forces with Jay-Z in 2004, the nu-metal legends teamed with American turntablist group The X-Ecutioners to bring us the 2002 single "It's Goin' Down."

The collab resulted in The X-Ecutioners being the opening act for Linkin Park on their tour for their debut album, "Hybrid Theory."