I honestly can't believe we're going through the whole 'KATY USES WRITING CAMPS!!!' thing again.
First of all, PRISM took over a year to make. Sessions started in Summer 2012 and she wrote enough material for two albums. If she obtained all that material through writing camps, it would've taken 3 weeks and obviously it isn't economically feasible so she didn't do it. Second of all, she
collaborated (note that is the word he uses here) with Kacey Musgraves and Jonatha Brooke... why would successful established acts be in a writing camp for Katy Perry?
Also, leftover material from PRISM has landed on Britney's and Iggy's albums with her name IN THE CREDITS so I don't understand why y'all believe she doesn't have a single hand in writing her songs?
I MEAN we even have ****ING photographs of Sia and Katy, Katy and Luke, Katy and Bonnie, Katy and Sarah Hudson in the studio working together. There is even an interview with Ester Dean on the interwebs stating how Katy led the songwriting process for Firework.
I mean say hat you want about her music but don't deny the facts.