1.
Taylor Swift wrote "This Is What You Came For" for Calvin Harris and Rihanna as a single in 2016.
2.
Pharrell helped write "Hollaback Girl" with Gwen Stefani for her 2004 album, Love. Angel. Music. Baby.
3.
Kelly Clarkson wrote "Tell Me a Lie" for One Direction's 2011 album, Up All Night .
4.
Linda Perry (from 4 Non Blondes ) wrote "Beautiful" for Christina Aguilera's 2002 album, Stripped , and "Get the Party Started" for Pink's 2001 album, Missundaztood .
And listen to "Get the Party Started" here:
youtube.com
5.
Miguel and Justin Timberlake helped write "Rocket" with Beyoncé for her 2013 self-titled album, Beyoncé .
6.
Prince wrote "Manic Monday" for the Bangles' 1986 album, Different Light .
7.
Bruno Mars helped write "All I Ask" with Adele for her 2015 album, 25 .
8.
Harry Styles wrote "Just a Little Bit of Your Heart" for Ariana Grande's 2014 album, My Everything .
9.
Mariah Carey wrote Faith Hill's "Where Are You Christmas?" for the How the Grinch Stole Christmas soundtrack in 2000.
10.
Missy Elliott wrote "My Love Is Like...Wo" for Mýa's 2003 album, Moodring .
11.
Alicia Keys and Swizz Beatz wrote "Million Dollar Bill" for Whitney Houston's 2009 album, I Look to You .
12.
Christina Milian wrote "Play" for Jennifer Lopez's 2001 album, J.Lo .
13.
John Lennon helped write "Fame" with David Bowie for Bowie's 1975 album, Young Americans .
14.
Carole King wrote "(You Make Me Feel Like) a Natural Woman" for Aretha Franklin's 1968 album Lady Soul .
15.
And Sia wrote "Invincible" for Kelly Clarkson's 2015 album, Piece by Piece .