Fancy yourself a music aficionado? You might want to head on over to Google’s Research blog and take a look at the fantastic interactive music timeline they’ve developed. You can see the ebb and flow in popularity of several music genres and sub-genres. You can click trough and drill down each one, and are presented with quintessential examples for each. It’s extremely well done, meticulously researched, and chock full of so much data that it would take days to go over all of it. And of course, provided you live in a country where Google has the rights to play the music, you can listen to any of it at the press of a button. It’s about as exciting a course in music history as we’ve ever seen.