“Black Widow”- Iggy Azalea ft. Rita Ora Katy Perry co-wrote this song, which she was considering using on her 2013 album Prism. She decided against it and let Azalea use the song instead

“Justify My Love”- Madonna 2 years into his music debut, Lenny Kravitz was wrote this song for Madonna.

“Disturbia”- Rihanna Chris Brown wrote one of Rihanna’s earlier #1 hits.

“Manic Monday”- The Bangles Prince originally wrote “Manic Monday” for the band Apollonia 6, but gave it to the Bangles 2 years later. He used his pseudonym Christopher for the writing credits.

“Kokomo”-The Beach Boys John Phillips of the Mamas & the Papas wrote the verses to “Kokomo,” which was made specifically for the Tom Cruise film Cocktail.

“Paul Revere”- Beastie Boys While the Beastie Boys wrote most of their album “Licensed to Ill,” Run-DMC jumped in on “Paul Revere” and helped out with the lyrics.

“You Are Not Alone”- Michael Jackson R. Kelly wrote Jackson’s last Hot 100 #1.

“You Don’t Know My Name”- Alicia Keys Kanye West wrote the lyrics and produced the song for Keys’ 2003 album.

“Fuck You”- CeeLo Green Bruno Mars co-wrote CeeLo Green’s biggest solo hit. 4 “Irreplaceable”- Beyonce Ne-Yo originally wrote this song with a country singer in mind before changing it to an R&B jam. Beyonce heard a demo and decided she wanted it.

“Do the Bartman”- The Simpsons Michael Jackson didn’t take credit originally because of contract issues, but he wrote this pop-rap track for the show since he was a huge fan.

“Buggin”- Bugs Bunny (Space Jam Soundtrack) Clearly Jay-Z loved Space Jam as much as the rest of us, because he wrote Bugs Bunny’s solo rap “Buggin.”

“Irreplaceable”- Beyonce Ne-Yo originally wrote this song with a country singer in mind before changing it to an R&B jam. Beyonce heard a demo and decided she wanted it.

“Gettin’ Jiggy Wit It”- Will Smith For a brief period of time in the late 1990s, Nas was Will Smith’s go-to hip-hop writer, and wrote “Gettin Jiggy Wit It.” He also had a had in writing Smith’s other hit “Miami.”