Regardless what your opinion is, Katy Perry has placed her stamp onto pop music in recent times.  “Roar,” a single that has drawn scrutiny from critics despite aiming for archetypical Perry success, continues Perry’s lofty pop status.  I didn’t think “Roar” was the second coming, but I though overall it was a decent single that paled compared to her most memorable.  That said, while I’m not huge Katy Perry fan, I acknowledge the pop star has had her share of hits.  Which ones are most important? Here’s my top five!