1. Paul McCartney and Michael Jackson
Worlds collided when McCartney and Jackson teamed up for the pop song “Say Say Say” back in 1983. A Beatle and the Prince of Pop, need we say more?
Must hear: “Say Say Say”
2. Danger Mouse and Cee Lo Green
Super producer Danger Mouse and Goodie Mob’s raspy and powerful hook singer Cee Lo are the two awesome halves that made up Gnarls Barkley. Gnarly indeed.
Must hear: “Who’s Gonna Save My Soul”
3. Iron & Wine and Calexico
Sam Beam of Iron & Wine teamed up with the eclectic rock group Calexico to bring a new twist to folk.
Must hear: “16, maybe less”
4. Lionel Richie and Diana Ross
This timeless duo paired up to release the chart-topping “Endless Love” in 1981, which has since lived on to be played at every single wedding ever.
Must hear: “Endless Love (Live)”
5. Kanye, Frank Ocean and Jay-Z
The trio teamed up on two songs in the epic 2011 album Watch the Throne: “No Church In The Wild” and “Made In America”, two tracks tinged with religious references.
Must hear:“Made In America”
6. Willie Nelson and Norah Jones
The Red Headed Stranger teamed up with the soulful Jones for a truly spine-tingling rendition of “Baby It’s Cold Outside.”
Must hear:“The Wurlitzer Prize”
7. Them Crooked Vultures
This rock supergroup features the likes of Dave Grohl of the Foo Fighters, Josh Homme of Queens of the Stone age and John Paul Jones, formerly of Led Zeppelin.
8. Ashanti and JaRule
Ja Rule and Ashanti collaborated on a number of songs that defined the rapper + r&b hook style of the early 2000’s with songs like “Always on Time,” “Mesmerize” and “Wonderful.”
Must hear: “Down 4 U”
9. OFF! (Black Flag and Circle Jerks)
When you combine two of the most brutal and legendary punk bands of the 20th century into one band, there’s no way the result isn’t gonna be mind blowing. Off! has been touring together since 2009 and shows no sign of slowing down.
Must hear: “Wiped Out”
10. Boyz II Men and Mariah Carey
Before Mariah became the delightful nut job she is today, she was better known for her incredible vocals, like on this track with Boyz II Men, one of the most intensely tear-jerky songs of the 90’s.
Indie supergroup Gayngs includes musicians from Bon Iver, Doomtree, Har Mar Superstar, Digitata, Poliça, Megafaun, and The Rosebuds.
Must hear: “Cry”
12. George Jones and Tammy Wynette
Though they divorced after only 6 years of marriage, George and Tammy continued performing together for decades - you could say that after all she stood by her man.
Must hear: “Golden Ring”
13. Child of Lov
Damon Albarn of Blur already knocked one side project out of the park with Gorillaz and his newest project, a collaboration with DOOM is sounding just as promising.
Must hear: “Give Me”
14. Hall and Oates
This list wouldn’t be complete without one of the best hit-making duos of the 20th century. Their timeless songs have been sampled in dozens of songs throughout the years from huge artists like Kanye West and Wu-Tang Clan.
Must hear: “Private Eyes”