Human beings are fickle by nature. Fads come and go, musical taste changes, Madonna sports a new hair color and then the remix is born. The great thing about tracking human nature's seemingly incoherent musical taste is that you can get a feel for where we've been and where we are going as a culture. Want to take a tour of our musical evolution over the last twenty years? Surf the peaks and valleys of popular music through How Music Evolved, and if you really want to go down the rabbit hole there is a hotbed of statistics to absorb.