Once you listen to enough music, it all just kinda starts sounding the same. And basically, it's because there are only so many sounds we hear and they can only be arranged in so many ways. Check out the scientific details on how it's possible, that in the future, there may be no new music.

Nickelback, Facebook

Alright, I'm not a scientist or a mathematician but this dude seems to be, so I'm going to take his word on it.  And honestly, it seems pretty legit.  Most music follows the same formulas and have a lot of similarities in them, so I would think eventually, we'll run out of new music soon.

Source: Fark