The Vlog Brothers demonstrate once again that there are only a four chords in pop music, and they are used over and over.
See also: Rob Paravonian’s Pachelbel Rant and The Axis of Awesome.
The Axis of Awesome analyzed all the pop music hits, and came to the conclusion that you only need to know 4 simple chords to make a good song! Sounds easy enough… check out the medley.
From the Upcoming Queue, submitted by squarepixel.

