i figured this was the best place to put this.

I read on a thread somewhere that the person is going to go through all time periods in music and try and diversify his collection. I would like to do the same. I'm having an easy time finding the musicians, but I would like a list of 20th and 21st Century styles and the time period they originated. Like Jazz would be 1920s (If I'm correct). I searched for the past like hour or so and I got nthing of the sort.

You'd have to be more specific in your search dude.

You could argue that rap came from cavemen.
And no, Guitar Hero will not help. Even on expert. Really.