And this is Sara Bareilles' song, "Brave."
The similarities cannot be ignored. So what's the deal, Katy?
Back in May, Katy Perry tweeted her love of Bareilles' song.
And here are the two hanging out in December 2012.
So maybe it was a respectful, subconscious theft on Perry's part.
But still, why didn't anyone in Perry's camp realize the similarities in the singles?
In the end, Sara doesn't seem too upset about the whole ordeal.
She was actually really, really cool about it: