Every day is another chance to stump your friends with some music trivia. I was pretty surprised when I heard that Miley Cyrus didn't write, "Party In the U.S.A." I'm not sure I can ever listen to it the same again. Just kidding, I can totally still rock out to that alone in my car.

Here are 9 songs that you might be surprised to hear weren't written by the singers who recorded them:

  • 1

    Jessie J wrote Miley's "Party in the U.S.A."

  • 2

    Kanye wrote Alicia Keys' "You Don't Know My Name"

  • 3

    Kesha wrote Britney Spears' "Til the World End"

  • 4

    Lenny Kravitz wrote Madonna's "Justify My Love"

  • 5

    Prince wrote Sinead O'Connor's "Nothing Compares 2 U"

  • 6

    Ne-yo wrote Beyonce's "Irreplaceable"

  • 7

    Bruno Mars wrote Cee Lo's "Forget You"

  • 8

    Ed Sheeran wrote One Direction's "Little Things"

  • 9

    Calvin Harris wrote Rihanna's "We Found Love"

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