If you're a guitarist, and weren't born with "squid fingers", I think commonalities have a lot to do with what key you sing in and how easy the chords are to play. The typical listener isn't a musician so, all they generally want is a "dance beat" with an easy to follow melody. Only musicians tend to criticize each other for being too "generic" or too "outside the box". Big picture... Whoever writes the best songs makes the rules!

The guy trying to sue GaGa is a complete a$$ Wipe!