Anyone who listens to pop radio regularly has probably been hit with this realization at one point or another – a ton of pop music sounds very similar. It seems like grandpa logic, but a growing body of research confirms what we all suspect: Pop music is actually getting more and more homogeneous. And now, thanks to a new study, they know why.A new study, surveying more than 500,000 albums, shows simplicity sells best across all music genres. As something becomes popular, it necessarily dumbs down and becomes more formulaic. So if you’re wondering why the top 10 features two Meghan Trainor songs that sound exactly the same and two Taylor Swift songs that sound exactly the same, scientists think they finally have the answer.