Submitted by Mike D.

It’s been too long since posting about a Dr. Luke produced song so here we are. Check out Katy Perry‘s recently released track “Roar” and Sara Bareilles track “Brave”. Even the lyrics are pretty similar. Since Jack Antonoff from the band Fun co-wrote “Brave” I’m going to add “We Are Young” (2011) here as well since you can hear the clear inspiration.
Katy Perry - "Roar" (August, 2013)
Sara Bareilles - "Brave" (April, 2013)
fun. - "We Are Young (Chorus)" (2011)
For more Katy Perry, Dr. Luke and Fun tracks see the following:
Katy Perry vs. Kesha vs. Miley Cyrus vs. Justice
Dr. Luke produced tracks on ThatSongSoundsLike
fun vs. Thompson Twins? vs. Queen? vs. Erasure? vs. ?? (POPULAR!)

Sure the piano is similar, But the actual chords in this song are lifted from dog days by florence and the machine.
You make it sound like shoplifting. They’re only chords and you can do so much with them, which may be why it’s almost impossible to copyright a chord progression.
katy perry – legendary lovers — kylie minogue – come in to my world
I think the chorus melody of Roar sounds like She Likes Surprises by Soundgarden (1994) and part of The Scientist by Coldplay (2002).
They only really sound similar to untrained ears. When I first heard each I had trouble telling them apart from the intro — but then when I performed “Brave” live I had practiced it so often that “Roar” no longer sounded anything like it. Furthermore, the lyrics are nothing alike. “Brave” is about stepping up and speaking your truth, “Roar” is a more aggressive song about not taking people’s shit anymore.
Admittedly, with musical training you can more easily notice both similarities and differences between songs, but the melodies of Roar and Brave are virtually identical with similar piano accompaniment. Anyway, Blow Me (One Last Kiss) by Pink (2012) has a similar melody in its chorus.