Watch as Alex Chadwick from Chicago Music Exchange gives us a brief history of rock and roll with 100 riffs–starting with Mr. Sandman by Chet Atkins and ending with Cruel by St. Vincent. This video was shot in one take last year and now has over 8 million views. Even cooler than that? Now you can read the tabs as the video plays thanks to the folks at Sound Slice. Full list of songs at Guitar World.