Harry Styles writing for Ariana Grande? Incredible.
We all know that not every singer out there writes their own songs. (And we also all know that that Ed Sheeran and Sia are behind like half the biggest hits in pop music.)
But it’s always jarring when you hear that a song you’ve been singing along to for a decade is actually written by someone completely different. So without further ado, here are the songwriters behind some massive songs that kind of break our brains when we think too hard about it.