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You asked:

what songs did katy perry write

  • The songs that Katy Perry is an author of include Hot N Cold, UR So Gay, I Kissed a Girl, Firework and Last Friday Night (T.G.I.F.).
  • Hot N Cold
    Hot N Cold
    Hot N Cold

    "Hot N Cold", the song by American singer Katy Perry

  • UR So Gay
    UR So Gay
    UR So Gay

    "Ur So Gay", the debut promotional single released by pop singer Katy Perry, produced by Greg Wells and engineered by Drew Pearson

  • I Kissed a Girl
    I Kissed a Girl
    I Kissed a Girl

    "I Kissed a Girl", the single released by Katy Perry and produced by Dr. Luke

  • Firework
    Firework
    Firework

    Firework, the Katy Perry song

  • Part of Me
    Part of Me
    Part of Me

    Part of Me, the song by Katy Perry

  • E.T.
    E.T.
    E.T.

    E.T., the single

  • Hot n Cold
    Hot n Cold
    Hot n Cold

    "Hot n Cold", the song by American singer Katy Perry

  • Teenage Dream
    Teenage Dream
    Teenage Dream

    Teenage Dream, the single by Katy Perry

  • Ur So Gay
    Ur So Gay
    Ur So Gay

    "Ur So Gay", the song released by pop singer Katy Perry, produced by Greg Wells and engineered by Drew Pearson

  • Thinking of You
    Thinking of You
    Thinking of You

    "Thinking of You", the fourth single of Katy Perry from her 2008 album One of the Boys