look sure enougth its a simple chord progression and yes its cool and for all the wingers out there saying it isnt music you have lost touch about what music really is to the people saying it is soo simple it is soo easy these disgust me these are lame music isnt all about the theory you need soul if you listen to most of the songs sure they have the same riff but there diffrent there personal there sung from the heart so it isnt lame you need to learn what music really is expressing your self and letting your emotions flow freely besides it so happens that those four chords can sound the same but there all diffrent listen again and you will understand