When Katy Perry first came out with One of the Boys; her music was defiantly more 'rock' than it is now. Sure the fun and meaningless factor hasn't changed to much from then compared to now, but now that Katy Perry's music is more 'pop' (probably to sell more records) the quality has taken a serious downfall. Teenage Dream is up there with the stupidest music I have ever heard. All I have to say is it's time to grow up a little bit. You're twenty five. Not sixteen. The only reason I'm giving this album a two star review is because of the song 'Who Am I Living For'. By far the best song on the album. It shows a more dark, serious and considerate side of Katy and that I have come to appriaciate over time.