The Law of Conservation of Music.

It's actually virtually impossible to create a new musical language or style that hasn't been heard before. Any new style will simply be a derivation of a previously existing style. That's why the trend these days is to combine previously existing styles into new sounds. While the individual elements might not be new, the resulting mix is at least a refreshing change! I pose a question though, will there come a time when we'll eventually create so many new genres that it'll all just be a messy mash of bullshit and not quality music?