... who Axis of Awesome is? Funny stuff. Check it out http://www.youtube.com/watch?v=Co9mW_9hH2g&feature=fvst
I love the way they started with a JAMES BLUNT song, oh yes! ...although, the same 4 chords might be true for a great many number of songs, there is always that 5th or the power chord!
I've noticed that many hits revolve around, chords G,Em, C and D.Eg. Last kiss, Stay. In the past there have been many 3 chord songs too.
Rock anthems mostly revolves around 3 chords. But of course, the power chords are not really counted somehow!